Moisturizing rod for skin care and make-up and production process thereof

Abstract

The invention provides a moisturizing rod for skin care and make-up and a production process thereof. The moisturizing rod is prepared from the following components in parts by weight: 15 to 30 parts of isononyl isononanoate, 5 to 15 parts of octyldodecanol, 5 to 15 parts of caprylic / capric triglyceride, 10 to 20 parts of isododecane, 5 to 15 parts of hexyl laurate, 5 to 15 parts of squalane, 5 to 15 parts of dibutyl ethyl hexanoyl glutamine, 5 to 15 parts of dibutyl lauroyl glutamine and 0.1 to 1 part of tocopherol (vitamin E). The composition is prepared from the following components in parts by weight: 0.1 to 1 part of ceramide NS and / or ceramide NG, 0.5 to 5 parts of olive fruit oil, 0.5 to 10 parts of meadowfoam seed oil, 0.1 to 1 part of citrus extract, 0.1 to 1 part of sandalwood oil, 0.1 to 1 part of pelargonium graveolens oil, 0.1 to 1 part of rose oil, 0.5 to 5 parts of aluminum starch octenylsuccinate and 0.1 to 1 part of bisabolol. The formula is safe, natural and highly friendly, and does not contain alcohol, glycerol, paraffin, preservatives and the like; the moisturizing rod adopts a whole-oil system formula and does not have conditions for microbial growth; through cooperation and synergistic effects of the components in the formula, the moisturizing rod is smooth to use, fresh and non-sticky.

Description

Technical Field

[0001] The present invention relates to the field of moisturizing sticks, in particular to a moisturizing stick for skin care and cosmetics and a production process thereof. Background Art

[0002] Skin is a vital organ in the human body, protecting the body, expelling perspiration, and sensing heat, cold, and pressure. It is also a direct indicator of human health and aging. The stratum corneum, the outermost layer of the skin, serves as the body's natural barrier and plays a crucial role in maintaining skin moisture. It is generally believed that the water content of the stratum corneum should be between 12% and 20%. When the water content falls below 10%, the skin becomes dry, rough, and even chapped. To balance the moisture content of the facial stratum corneum and maintain optimal skin condition, moisturizing and hydrating skincare products have emerged.

[0003] Currently, most skin care products on the market are presented in the form of water, lotion, and cream. When using, the water, lotion, and cream products are applied to the face with the help of the palm of the hand, and then massaged to promote absorption to achieve the purpose of skin care. Moisturizing sticks are popular with consumers for their portability and ease of use. However, most of the existing moisturizing stick formulas do not use pure natural raw materials, and usually contain chemical raw materials, resulting in the actual effect and skin-friendliness of the moisturizing sticks being poor, or having certain irritation and allergic effects. For example, CN114146005B is a stick-shaped skin care product for hydration and moisturizing, and its preparation method, which includes an emollient, a moisturizer, a skin conditioner, a thickener, an emulsifier, a preservative, and water. The gradual thickening and hardening of the skin care system is achieved by synthetic wax, and preservatives need to be added. Synthetic wax and preservatives are not suitable for long-term use on the skin.

[0004] CN114146005B discloses a moisturizing stick-shaped skin care product and its preparation method. The stick-shaped skin care product comprises the following raw materials in weight percentage: 14-40% emollient, 4-29% humectant, 2-20% skin conditioner, 1-10% thickener, 1-10% emulsifier, 0.5-1% preservative, and 30-50% water. The thickener comprises a first synthetic wax, a second synthetic wax, and a third synthetic wax in a weight ratio of (3-5):(2-3):1. The first synthetic wax has a melting range of (68-72)°C to (83-87)°C. The second synthetic wax has a lower initial melting temperature and a lower final melting temperature than the first synthetic wax. The third synthetic wax has a lower initial melting temperature and a lower final melting temperature than the second synthetic wax. Due to the large amount of waxes and preservatives used, the stick-shaped skin care product inevitably causes damage to the user's skin and is not suitable for long-term use. Summary of the Invention

[0005] In view of this, the present invention aims to propose a moisturizing stick for skin care and makeup and its production process to solve the problems in the prior art that the formula of skin care stick products is not safe enough, is irritating, occlusive or allergenic, and is not suitable for long-term use.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] In one aspect, the present invention provides a moisturizing stick for skin care and makeup, comprising the following components in parts by weight:

[0008] Emollients: 15-30 parts of isononyl isononanoate, 5-15 parts of octyldodecanol, 5-15 parts of caprylic / capric triglyceride, 10-20 parts of isododecane, 5-15 parts of hexyl laurate, 0.5-5 parts of olive oil, 0.5-10 parts of white meadowfoam seed oil, 0.1-1 parts of geranium oil,

[0009] Moisturizer: 5-15 parts of squalane, 0.1-1 parts of ceramide NS / ceramide NG,

[0010] Structural enhancer: 5-15 parts of dibutyl ethylhexanoyl glutamide, 5-15 parts of dibutyl lauroyl glutamide;

[0011] Antioxidant: Tocopherol (Vitamin E) 0.1-1 part;

[0012] Fragrance: 0.1-1 part of citrus extract, 0.1-1 part of sandalwood oil, 0.1-1 part of rose oil;

[0013] 0.5-5 parts of aluminum starch octenylsuccinate and 0.1-1 parts of bisabolol.

[0014] Furthermore, the usage ratio of octyldodecanol, isododecane and hexyl laurate is 1:2:1.5.

[0015] On the other hand, the present invention also provides a production process for the above-mentioned moisturizing stick for skin care and cosmetics, comprising the following steps:

[0016] S1. Clean the production equipment and instruments and prepare to weigh the components of the formula;

[0017] S2. In a stirring pot, isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, squalane are added sequentially, heated and stirred until completely dissolved, then dibutyl ethylhexanoyl glutamine and dibutyl lauroyl glutamine are added and stirring is continued, and the temperature is lowered;

[0018] S3. After cooling, tocopherol (vitamin E), ceramide NS and / or ceramide NG, olive oil, meadowfoam seed oil and citrus extract were added sequentially and stirred;

[0019] S4 was added sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate and bisabolol and stirred to obtain a material body;

[0020] S5. After the physical and chemical indicators are tested and qualified, the semi-finished products are discharged, molded and stored;

[0021] S6. After the microbiological indicators are tested and qualified, packaging and coding are carried out;

[0022] S7. Finished products will be put into storage after passing random inspection.

[0023] Furthermore, in step S2, the temperature is raised to 80-85°C.

[0024] Furthermore, in step S2, the temperature is lowered to below 70°C, and in steps S3 and S4, the temperature is maintained below 70°C.

[0025] Furthermore, in step S2, the temperature is lowered to 68-70°C, and the temperature is maintained at 68-70°C in both step S3 and step S4.

[0026] Furthermore, in steps S2 to S4, the stirring frequency is 20 to 25 r / min. The stirring speed should not be too fast to easily generate bubbles, nor too slow to affect the efficiency.

[0027] Furthermore, in step S5, the material body is molded by hot filling and demolding, and is filled into the mold when the material temperature is 68-70°C. The temperature of the mold is maintained at 100-150°C during filling. After filling, it is left to stand and demolded after cooling to room temperature to obtain a paste.

[0028] Furthermore, in step S6, after inserting the packaging tube upside down into the outside of the paste, the packaging tube is flipped over so that the packaging tube is upright, ensuring that the paste slides to the bottom of the packaging tube under the action of gravity, and the bottom of the packaging tube is lightly tapped for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully fitted together.

[0029] Furthermore, in step S6, physical and chemical indicators are tested at 65°C.

[0030] During filling, dual control of both the material and mold temperatures ensures that after filling, the material cools down to a solid state, resulting in a smooth and aesthetically pleasing paste. Under these temperature conditions, the temperature difference between the mold's high temperature and the material entering the can creates a pressure differential, effectively preventing excessive bubbles from solidifying within the condensed material. Furthermore, after sufficient cooling and demolding, the paste's surface remains smooth, free of depressions or protrusions, effectively ensuring an aesthetically pleasing appearance.

[0031] If the temperature difference between the material and the mold is too large, or the material temperature is much lower than the mold temperature, the paste may develop a fine, flocculent appearance after solidification after canning and demolding, resulting in an uneven surface. Furthermore, if the mold temperature is too high, uneven temperature transfer during the cooling process can result in an uneven appearance of the paste. If the mold temperature is too low, the pressure differential between the mold temperature and the material during filling cannot eliminate bubbles trapped in the material, hindering the smoothness of the paste.

[0032] Compared with the prior art, the moisturizing stick for skin care and cosmetics and the production process thereof of the present invention have the following advantages:

[0033] The present invention discloses a moisturizing stick for skin care and makeup and a production process thereof. The formula thereof adopts pure natural materials, thereby achieving a high moisturizing effect on the skin while avoiding the use of chemical raw materials such as artificial fragrances, artificial pigments, and acne-causing ingredients, thereby optimizing the moisturizing effect while improving skin affinity during use.

[0034] The moisturizing stick for skin care and makeup of the present invention uses squalane as a component to simulate the skin's natural oil production to moisturize, soften the skin, and strengthen the skin barrier. At the same time, tocopherol (vitamin E) is combined with it to have antioxidant effects and protect and heal the skin. Ceramide is a natural lipid component of the skin, which is a skin moisturizing and repairing tool, improving skin condition, cell regulation and anti-insult. Bisabolol is a plant active ingredient that is an anti-inflammatory, antibacterial, healing and soothing tool. Natural plant essential oils are used to eliminate chemical and chemical essences, solving problems naturally and using aromatherapy concepts.

[0035] The moisturizing stick for skin care and makeup of the present invention is easy to carry, and can be used as a substitute for moisturizing skin care products. At the same time, it can be used in combination with other cosmetic products such as foundation / sunscreen, thereby ensuring safety in use and being non-irritating to the skin. It is suitable for audiences with all kinds of sensitive skin and is convenient for daily and travel use. It has a clean and light texture, and the paste containing moisturizing, soothing and anti-wrinkle effects can help hydrate and moisturize, prepare for makeup or for skin care, moisturize and moisturize, fade fine lines on the skin, improve dry skin, and make the skin smooth and moisturized. It can be used on the face, neck, hands or limbs and other skin parts. Usage method: After opening the lid, rotate the upper end of the container to rotate out part of the paste, and apply a proper amount directly or with your fingers to the face, neck, hands or limbs, and apply it gently and evenly. It can be applied to different skin parts for moisturizing according to the skin condition. After closing the lid, place it in a cool place. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0037] Figure 1The present invention is a flow chart of the production process of the moisturizing stick for skin care and makeup. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with specific embodiments. It should be noted that the data in the following experimental examples are obtained by the inventor through a large number of experiments. Due to space limitations, only a portion thereof is shown in the specification, and those skilled in the art can understand and implement the present invention under these data. These embodiments are merely intended to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that, after having read the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these changes or modifications also fall within the scope protected by this application.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] The moisturizing stick for skin care and makeup of the present invention comprises the following components in parts by weight:

[0042] 15-30 parts of isononyl isononanoate, 5-15 parts of octyldodecanol, 5-15 parts of caprylic / capric triglyceride, 10-20 parts of isododecane, 5-15 parts of hexyl laurate, 5-15 parts of squalane, 5-15 parts of dibutyl ethylhexanoyl glutamine, 5-15 parts of dibutyl lauroyl glutamine, 0.1-1 parts of tocopherol (vitamin E), 0.1-1 parts of ceramide NS / ceramide NG, 0.5-5 parts of olive fruit oil, 0.5-10 parts of meadowfoam seed oil, 0.1-1 parts of citrus extract, 0.1-1 parts of sandalwood oil, 0.1-1 parts of geranium oil, 0.1-1 parts of rose oil, 0.5-5 parts of aluminum starch octenylsuccinate, and 0.1-1 parts of bisabolol.

[0043] The production process of the skin care and cosmetic moisturizing stick of the present invention comprises the following steps:

[0044] S1. Clean the production equipment and instruments and prepare to weigh the components of the formula;

[0045] S2. In a stirring pot, isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, squalane are added sequentially, heated and stirred until completely dissolved, then dibutyl ethylhexanoyl glutamine and dibutyl lauroyl glutamine are added and stirring is continued, and the temperature is lowered;

[0046] S3. After cooling, tocopherol (vitamin E), ceramide NS and / or ceramide NG, olive oil, meadowfoam seed oil and citrus extract were added sequentially and stirred;

[0047] S4 was added sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate and bisabolol and stirred to obtain a material body;

[0048] S5. After the physical and chemical indicators are tested and qualified, the semi-finished products are discharged, molded and stored;

[0049] S6. After the microbiological indicators are tested and qualified, packaging and coding are carried out;

[0050] S7. Finished products will be put into storage after passing random inspection.

[0051] The moisturizing stick of this invention can be applied directly to the skin, eliminating the need for traditional lotions, lotions, and creams to be repeatedly patted or applied evenly with fingers. In addition to being used for daily moisturizing and skincare, it can also be used as a base before makeup and as a repair tool after makeup. It can be applied to the entire face or only to specific areas depending on specific needs.

[0052] Example 1

[0053] The formula is: 15 parts of isononyl isononanoate, 5 parts of octyldodecanol, 5 parts of caprylic / capric triglyceride, 10 parts of isododecane, 5 parts of hexyl laurate, 5 parts of squalane, 5 parts of dibutyl ethylhexanoyl glutamine, 5 parts of dibutyl lauroyl glutamine, 0.1 parts of tocopherol (vitamin E), 0.1 parts of ceramide NS, 0.5 parts of olive fruit oil, 0.5 parts of meadowfoam seed oil, 0.1 parts of citrus extract, 0.1 parts of sandalwood oil, 0.1 parts of geranium oil, 0.1 parts of rose oil, 0.5 parts of aluminum starch octenylsuccinate, and 0.1 parts of bisabolol.

[0054] The production process of moisturizing sticks includes the following steps:

[0055] Clean the production equipment and utensils, and accurately weigh the components according to the above formula;

[0056] Add isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, and squalane to a stirring pot in sequence, heat to 80°C and stir until completely dissolved, then cool to 70°C, add dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide and continue stirring until uniform;

[0057] Maintaining the temperature at 70°C, add tocopherol (vitamin E), ceramide NS, olive oil, meadowfoam seed oil and citrus extract in sequence and stir until uniform;

[0058] Maintaining the temperature at 70°C, add sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate, and bisabolol and stir evenly to obtain a material;

[0059] After the physical and chemical indicators are tested and found to be qualified, the semi-finished product is directly filled into the packaging tube. After filling, it is left to stand and then demolded to obtain the paste after cooling to room temperature.

[0060] Example 2

[0061] The components and preparation methods of Example 2 are the same as those of Example 1. The only difference is that the semi-finished product is molded by hot filling and demolding. The temperature of the material during filling is 70°C and the mold temperature is 150°C. After filling, the product is allowed to stand and then demolded after cooling to room temperature to obtain a paste.

[0062] After inserting the packaging tube upside down into the outside of the paste, flip the packaging tube so that it is upright, ensuring that the paste slides to the bottom of the tube under the action of gravity. Gently tap the bottom of the packaging tube for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully embedded.

[0063] Example 3

[0064] The formula is: 30 parts of isononyl isononanoate, 15 parts of octyldodecanol, 15 parts of caprylic / capric triglyceride, 20 parts of isododecane, 15 parts of hexyl laurate, 15 parts of squalane, 15 parts of dibutyl ethylhexanoyl glutamine, 15 parts of dibutyl lauroyl glutamine, 1 part of tocopherol (vitamin E), 1 part of ceramide NS, 5 parts of olive fruit oil, 10 parts of meadowfoam seed oil, 1 part of citrus extract, 1 part of sandalwood oil, 1 part of geranium oil, 1 part of rose oil, 5 parts of aluminum starch octenylsuccinate, and 1 part of bisabolol.

[0065] The production process of moisturizing sticks includes the following steps:

[0066] Clean the production equipment and utensils, and accurately weigh the components according to the above formula;

[0067] Add isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, and squalane to a stirring pot in sequence, raise the temperature to 85°C and stir until completely dissolved, then cool to 68°C, add dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide and continue stirring until uniform;

[0068] Maintaining the temperature at 68°C, add tocopherol (vitamin E), ceramide NS, olive oil, meadowfoam seed oil and citrus extract in sequence and stir until uniform;

[0069] Maintaining the temperature at 68°C, add sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate, and bisabolol and stir evenly to obtain a material;

[0070] After the physical and chemical indicators are tested and found to be qualified, the semi-finished product is put into the mold by hot filling and demoulding. The temperature of the material during filling is 68℃ and the mold temperature is 100℃. After filling, it is left to stand and then demoulded to obtain the paste after cooling to room temperature.

[0071] After inserting the packaging tube upside down into the outside of the paste, flip the packaging tube so that it is upright, ensuring that the paste slides to the bottom of the tube under the action of gravity. Gently tap the bottom of the packaging tube for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully embedded.

[0072] Example 4

[0073] The formula is: 20 parts of isononyl isononanoate, 10 parts of octyldodecanol, 10 parts of caprylic / capric triglyceride, 15 parts of isododecane, 10 parts of hexyl laurate, 10 parts of squalane, 10 parts of dibutyl ethylhexanoyl glutamine, 8 parts of dibutyl lauroyl glutamine, 0.5 parts of tocopherol (vitamin E), 0.5 parts of ceramide NG, 3 parts of olive fruit oil, 5 parts of meadowfoam seed oil, 0.8 parts of citrus extract, 0.6 parts of sandalwood oil, 0.7 parts of geranium oil, 0.5 parts of rose oil, 3 parts of aluminum starch octenylsuccinate, and 0.5 parts of bisabolol.

[0074] The production process of moisturizing sticks includes the following steps:

[0075] Clean the production equipment and utensils, and accurately weigh the components according to the above formula;

[0076] Add isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, and squalane to a stirring pot in sequence, heat to 80°C and stir until completely dissolved, then cool to 70°C, add dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide and continue stirring until uniform;

[0077] Maintaining the temperature at 70°C, add tocopherol (vitamin E), ceramide NG, olive oil, meadowfoam seed oil and citrus extract in sequence and stir until uniform;

[0078] Maintaining the temperature at 70°C, add sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate, and bisabolol and stir evenly to obtain a material;

[0079] After the physical and chemical indicators are tested and found to be qualified, the semi-finished product is put into the mold by hot filling and demoulding. The temperature of the material during filling is 70℃ and the mold temperature is 130℃. After filling, it is left to stand and then demoulded after cooling to room temperature to obtain the paste.

[0080] After inserting the packaging tube upside down into the outside of the paste, flip the packaging tube so that it is upright, ensuring that the paste slides to the bottom of the tube under the action of gravity. Gently tap the bottom of the packaging tube for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully embedded.

[0081] Example 5

[0082] The formula is: 15 parts of isononyl isononanoate, 7.5 parts of octyldodecanol, 5 parts of caprylic / capric triglyceride, 15 parts of isododecane, 11.25 parts of hexyl laurate, 5 parts of squalane, 5 parts of dibutyl ethylhexanoyl glutamine, 5 parts of dibutyl lauroyl glutamine, 0.1 part of tocopherol (vitamin E), 0.1 part of ceramide NS, 0.5 parts of olive fruit oil, 0.5 parts of meadowfoam seed oil, 0.1 parts of citrus extract, 0.1 parts of sandalwood oil, 0.1 parts of geranium oil, 0.1 parts of rose oil, 0.5 parts of aluminum starch octenylsuccinate, and 0.1 parts of bisabolol.

[0083] The preparation method is the same as Example 2.

[0084] Comparative Example 1

[0085] The formula composition and preparation method of Comparative Example 1 are the same as those of Example 4, except that dibutyl lauroyl glutamide is not added and 18 parts of dibutyl ethylhexanoyl glutamide are added.

[0086] Comparative Example 2

[0087] The formulation and preparation method of Comparative Example 2 are the same as those of Example 4, except that octyldodecanol is not added and 25 parts of isododecane are added.

[0088] Comparative Example 3

[0089] The formulation of Comparative Example 3 is the same as that of Example 4, the only difference being the process, which specifically includes the following steps:

[0090] Clean the production equipment and utensils, and accurately weigh the components according to the above formula;

[0091] Add isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, squalane, dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide to a stirring pot in sequence, heat to 80°C and stir until completely dissolved;

[0092] Then, the temperature was lowered to 70°C, and tocopherol (vitamin E), ceramide NG, olive oil, meadowfoam seed oil, and citrus extract were added in sequence and stirred until uniform;

[0093] Maintaining the temperature at 70°C, add sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate, and bisabolol and stir evenly to obtain a material;

[0094] After the physical and chemical indicators are tested and found to be qualified, the semi-finished product is put into the mold by hot filling and demoulding. The temperature of the material during filling is 70℃ and the mold temperature is 130℃. After filling, it is left to stand and then demoulded after cooling to room temperature to obtain the paste.

[0095] After inserting the packaging tube upside down into the outside of the paste, flip the packaging tube so that it is upright, ensuring that the paste slides to the bottom of the tube under the action of gravity. Gently tap the bottom of the packaging tube for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully embedded.

[0096] The net weight of the moisturizing sticks packed into the packaging tubes of Examples 1 to 5 and Comparative Examples 1 to 3 is 6.5 g ± 0.2 g. Specifically, the size of the mold can be adjusted according to the specifications of the moisturizing stick, thereby adjusting its net weight.

[0097] Among them, in the formula described in the present application, isononyl isononanoate is an emollient, which has the characteristics of being light, non-greasy, and improving ductility and skin feel.

[0098] Octyldodecanol is an emollient and solvent with moderate oiliness, which can enhance the smoothness of application and improve the texture of the product.

[0099] Isododecane is an emollient and a very light volatile oil that imparts a refreshing feel to the skin and is often used in fast-absorbing products.

[0100] Hexyl laurate is an emollient with a medium-light oily feel that imparts a silky touch and is often used to improve oily bases.

[0101] Caprylic / capric triglyceride is an emollient that has a smooth, non-greasy feel and good stability.

[0102] Squalane is a moisturizer and emollient derived from plants. It has good skin affinity, mimics the sebum membrane, and enhances the barrier function.

[0103] Dibutyl Ethylhexanoyl Glutamine is a structural enhancer with good skin compatibility, improving skin feel and smoothness. Dibutyl Lauroyl Glutamine is a structural enhancer that works synergistically with Dibutyl Ethylhexanoyl Glutamine to enhance the gel-like texture and silky skin feel.

[0104] Tocopherol (vitamin E) is an antioxidant that has the characteristics of delaying the oxidation of ingredients and protecting the skin. It can improve skin condition, cell regulation and anti-aging.

[0105] Ceramide NS / NG is a moisturizer and repair agent. It is an important skin lipid with the characteristics of repairing the barrier, anti-allergy and strong moisturizing.

[0106] Olive oil is a plant oil-based emollient that contains unsaturated fatty acids and antioxidants, which can soften and nourish the skin.

[0107] Meadowfoam seed oil is a plant oil emollient, rich in stable fatty acids, with a soft feel and good ductility.

[0108] Geranium oil is a plant-based emollient with a natural aroma that has both oil-regulating and soothing properties.

[0109] Aluminum starch octenylsuccinate has a "dry and smooth" effect that absorbs oil and improves skin feel.

[0110] Bisabolol is a plant active ingredient and a natural anti-inflammatory, antibacterial and healing ingredient that has the effects of soothing irritation, anti-allergy and moisturizing.

[0111] Citrus extract is an aroma agent with a fresh fruity aroma, and has astringent, refreshing and mood-regulating effects.

[0112] Sandalwood oil is a fragrance agent with a soft woody fragrance. It has a soft woody fragrance that soothes and comforts, and also has moisturizing and repairing effects.

[0113] Rose oil is a fragrance agent and has multiple functions such as anti-inflammatory and antioxidant, soothing and repairing, and enhancing pleasure.

[0114] The formula of the moisturizing stick for skin care and makeup of the present invention is safe and highly nature-friendly. It does not contain alcohol, glycerin, mineral oil, silicone oil, paraffin, preservatives, etc. The addition of isononyl isononanoate, octyldodecanol, isododecane, and glutamine derivatives helps to enhance the lightness, ductility, and smoothness of the texture. Ceramide, tocopherol, bisabolol, etc. can support the recovery of the skin barrier and are suitable for dry and fragile skin. The overall blend of citrus extract, sandalwood oil, rose oil and other essential oils replaces artificial fragrances, providing fragrance while providing moisturizing.

[0115] In addition, the acquisition of citrus extract is an existing technology and will not be described in detail here.

[0116] Moisturizing stick physical and chemical performance test

[0117] The test requirements for the physical and chemical properties of the moisturizing sticks are shown in Table 1, and the physical and chemical properties test results of the moisturizing sticks prepared in Examples 1 to 5 and Comparative Examples 1 to 3 are shown in Table 2.

[0118] Table 1

[0119]

[0120]

[0121] Table 2

[0122]

[0123] As shown in Table 2, the moisturizing sticks prepared in Examples 2-5 and Comparative Example 2 all met the technical requirements for various physical and chemical performance indicators. In Example 1, the semi-finished product was directly filled into the packaging tube during filling, which was not conducive to the smooth and even appearance of the moisturizing stick. In Comparative Example 1, only dibutyl ethylhexanoyl glutamine was added without dibutyl lauroyl glutamide. In Comparative Example 3, the order of adding dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide was changed, which was not conducive to the stability of the paste system and caused abnormal heat resistance.

[0124] The skincare and cosmetic moisturizing stick of this invention is an all-oil formula that eliminates the conditions for microbial growth and inhibits the survival of bacteria and mold. Microorganisms rely on an aqueous environment for their metabolic systems; an oily environment can choke them off and even dissolve their cell membranes. Therefore, the stick eliminates the need for preservatives, minimizing skin irritation and providing a safe formula.

[0125] Ability to solidify into stick shape and smoothness of use

[0126] After the moisturizing stick was placed at room temperature for 3 months, its hardness and smoothness of use were tested.

[0127] The hardness was tested using a texture analyzer. The smoothness of use was evaluated by 50 professionals using the moisturizing sticks prepared in Examples 1-5 and Comparative Examples 1-3 on their faces. The moisturizing sticks were applied directly to the face, and the smoothness of use was scored. The average score was calculated. The evaluation criteria for smoothness of use are shown in Table 3.

[0128] Table 3

[0129] state Score It is difficult to push the paste for application and it does not feel smooth 0 It is difficult to push the paste for application and it does not feel smooth. 1 Able to push the paste for application, feeling slightly smooth 2 Easy to push the paste for application, feels smooth 3

[0130] The solidification ability scores and the smoothness of use scores of the moisturizing sticks are shown in Table 4.

[0131] Table 4

[0132]

[0133]

[0134] As shown in Table 4, compared with Examples 2 to 5, the hardness of the moisturizing sticks in Comparative Examples 1 and 3 has decreased, and the scores for smoothness of use have also decreased. The hardness and smoothness of use scores of Examples 2 to 5 are both high, and they have a certain hardness to ensure that they will not break during use, and they are easy to push away when applied. Combined with the heat resistance data in Table 2, this may be due to the amino acid oil gel selected in the present invention (i.e., dibutyl ethylhexanoyl glutamine and dibutyl lauroyl glutamine in the formula). Since the formula of the present invention is an oil phase, in order to solidify and form it into a stick shape, it is necessary to select a suitable carrier. In the prior art, paraffin is mostly used as a carrier to promote the uniform dispersion of other components and help increase consistency and enhance ductility, thereby promoting solidification and molding. However, paraffin is a chemical raw material and has potential negative effects on the skin. For example, the closed barrier of paraffin may cause pores to be clogged and weaken the skin's own moisturizing function only through shrinkage of the physical barrier.

[0135] Therefore, the dibutyl ethylhexanoyl glutamine and dibutyl lauroyl glutamine selected by the present invention are oil gels based on amino acid structures. They are oil-soluble gels synthesized with glutamic acid as the skeleton and have the characteristics of "structured oil gels". They have the advantages of high skin affinity, natural ingredients, derived from natural amino acid glutamic acid, structure similar to skin keratin structure, gentle and non-irritating, suitable for sensitive skin use, etc., in line with the concept of natural health, and are different from petroleum-based thickeners. This type of amino acid-based oil gel can directly form a stable gel in a high oil phase environment, does not rely on emulsifiers or polymer thickeners, and relatively makes the formula more "clean". It also forms a nanoscale network structure through intermolecular interactions, which is suitable for paste form but has better ductility and is better than waxy structure. In addition, compared with traditional waxy or petrolatum structures, this type of oil gel has a refreshing, skin-friendly, fast-absorbing skin feel and does not cause a thick and greasy feeling. It can approximately simulate the high-quality texture experience of "from solid paste to oil-water penetration" in terms of touch. This type of gel can also stably encapsulate moisturizers such as squalane and ceramide, releasing the moisturizer during the application process to enhance penetration and water-locking effects.

[0136] The interaction between the oil phase components and the amino acid-based oleogel in the formula allows the moisturizing stick of the present invention to form a paste with a certain hardness. This paste does not break during application and is easily spread on the skin, providing excellent smoothness. Furthermore, the inventors have discovered that the simultaneous addition of two amino acid-based oleogels ensures structural stability while also providing a good application feel and layered skin texture. The moisturizing stick is a product that requires a long-lasting paste form while also being able to "melt quickly" at skin temperature.

[0137] Dibutyl lauroyl glutamine has strong film-forming and supporting capabilities, which helps to form a good network structure to support the paste, and dibutyl ethylhexanoyl glutamine optimizes touch and plasticity, and is used to fill the structure, so that the gel is not brittle and cracked and is applied smoothly, with excellent ductility and comfortable skin feel. The two can be used in combination to effectively balance, achieving the effect of not melting in summer and not cracking in winter, not dragging when applied, and not being greasy on the skin. In Comparative Example 1, only dibutyl ethylhexanoyl glutamine is added, and hardness is affected, and heat resistance is poor. In Comparative Example 3, the order of addition of the amino acid-based oil gel is changed, and the isononyl isononanoate part, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, and squalane in the formula are blended simultaneously, which is not conducive to playing its role, so its curing ability score is also reduced, affecting its hardness simultaneously. The moisturizing sticks of Examples 2-5 first incorporate isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, and squalane, followed by the amino acid oil gel. This creates a high-oil phase environment upon addition, facilitating its effective function in forming a stable, high-hardness gel. High curing ability and smoothness scores ensure that the sticks resist breaking easily during use, are easy to use, and can be easily pushed across the skin for application.

[0138] The moisturizing stick of Example 1 is directly filled, which is not only not conducive to the smooth appearance, but also may cause bubbles inside and uneven paste components, which has a certain impact on the hardness, and the hardness is lower than that of the moisturizing sticks of Examples 2 to 5.

[0139] Product efficacy testing

[0140] After cleansing, professional testers applied the moisturizing stick to the left half of their face. The right half served as a blank control, without any skincare product, to facilitate comparison of moisturizing properties. After 30 minutes, the testers rated their experience using the criteria shown in Table 5. Ninety professional testers used and rated the moisturizing sticks prepared in Examples 1-5 and Comparative Examples 1-3, as well as a commercially available moisturizing stick. The moisturizing scores are shown in Table 6.

[0141] Table 5

[0142]

[0143]

[0144] TEWL is an important parameter for evaluating the function of the skin's moisture barrier and has been widely recognized internationally. Therefore, the moisturizing and water-locking ability of a moisturizing stick can be evaluated by testing the change in TEWL value before and after using a moisturizing stick. Under specified temperature and humidity conditions, the transepidermal water loss (TEWL) value is obtained by measuring the water vapor partial pressure gradient at different points near the epidermis (within 1 cm) per unit time and unit cross-sectional area. This is used to measure the loss of water on the skin surface and thus understand the skin's water-locking condition. 180 women aged 30 to 35 were selected and randomly divided into 9 groups. After cleansing their faces every morning and evening, Examples 1 to 5, Comparative Examples 1 to 3, and commercially available moisturizing sticks were evenly applied on their faces for one month. The TEWL value of the same part of the face was measured using an epidermal water loss meter. △TEWL = (TEWL value before using the moisturizing stick - TEWL value after using the moisturizing stick) / TEWL value before using the moisturizing stick. The △TEWL test results are shown in Table 6.

[0145] Table 6

[0146]

[0147] As shown in Table 6, the TEWL values ​​of the moisturizing sticks prepared in Examples 1-5 decreased significantly, indicating reduced water loss. The moisturizing sticks provide a certain degree of moisture retention, providing hydration and moisturizing benefits, improving user comfort. Furthermore, they offer excellent moisturization, preventing a greasy feeling after use. In particular, the moisturizing sticks prepared in Examples 4-5, by controlling the ratio of octyldodecanol, isododecane, and hexyl laurate to 1:2:1.5, achieved the greatest change in ΔTEWL and the best moisturizing effect on the skin. Comparative Example 2, in which octyldodecanol was omitted, showed little change in ΔTEWL, resulting in a lower moisturization score. In the moisturizing stick formula, isododecane is an extremely light volatile oil that imparts a refreshing feel and is often used in fast-absorbing products. Hexyl laurate is a medium-light oil that imparts a silky feel and is often used to improve oily bases. Although isododecane and hexyl laurate are already included in the formula, the addition of octyldodecanol and the synergistic effect of these three components can further enhance the moisturizing effect of the moisturizing stick and avoid a sticky feeling, making it more easily accepted by users. Although each emollient is moisturizing, they vary in skin feel and volatility. Using them together can provide moderate moisturization (non-sticky, non-slippery, non-drying) for different skin conditions, meeting the demand for a non-greasy yet long-lasting moisturizing texture.

[0148] The moisturizing stick for skin care and makeup of the present invention has the following advantages:

[0149] (1) The formula is safe and natural, and does not contain alcohol, glycerin, paraffin, preservatives, etc.

[0150] (2) The moisturizing stick is a full oil system formula that does not have the conditions for microbial growth and can inhibit the survival of bacteria and mold;

[0151] (3) Through the coordination and synergy of the various components in the formula, as well as the adjustment of the order of addition, the moisturizing stick has appropriate hardness, smoothness in use, and excellent moisturizing ability, and is refreshing and non-sticky when used;

[0152] (4) The product is portable and easy to use, suitable for busy urban life, and can keep the skin moisturized anytime and anywhere. It is multifunctional and can be used for daily skin care, makeup base, and makeup repair. It is suitable for application to multiple parts of the body, such as the face, neck, hands or limbs. Depending on the skin condition, it can be applied to different parts of the skin to moisturize, thus achieving the effect of multiple uses.

[0153] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A moisturizing stick for skin care and makeup, characterized in that: The composition comprises the following components in parts by weight: Emollients: 15-30 parts of isononyl isononanoate, 5-15 parts of octyldodecanol, 5-15 parts of caprylic / capric triglyceride, 10-20 parts of isododecane, 5-15 parts of hexyl laurate, 0.5-5 parts of olive oil, 0.5-10 parts of white meadowfoam seed oil, 0.1-1 parts of geranium oil, Moisturizer: 5-15 parts of squalane, 0.1-1 parts of ceramide NS / ceramide NG, Structural enhancer: 5-15 parts of dibutyl ethylhexanoyl glutamide, 5-15 parts of dibutyl lauroyl glutamide; Antioxidant: Tocopherol (Vitamin E) 0.1-1 part; Fragrance: 0.1-1 part of citrus extract, 0.1-1 part of sandalwood oil, 0.1-1 part of rose oil; 0.5-5 parts of aluminum starch octenylsuccinate and 0.1-1 parts of bisabolol.

2. The moisturizing stick for skin care and makeup according to claim 1, characterized in that The usage ratio of octyldodecanol, isododecane and hexyl laurate is 1:2:1.

5.

3. A production process for the moisturizing stick for skin care and cosmetics according to any one of claims 1 to 2, characterized in that: The steps include: S1. Clean the production equipment and instruments and prepare to weigh the components of the formula; S2. In a stirring pot, isononyl isononanoate, octyldodecanol, caprylic / capric triglyceride, isododecane, hexyl laurate, squalane are added sequentially, heated and stirred until completely dissolved, then dibutyl ethylhexanoyl glutamine and dibutyl lauroyl glutamine are added and stirring is continued, and the temperature is lowered; S3. After cooling, tocopherol (vitamin E), ceramide NS and / or ceramide NG, olive oil, meadowfoam seed oil and citrus extract were added sequentially and stirred; S4 was added sandalwood oil, geranium oil, rose oil, aluminum starch octenylsuccinate and bisabolol and stirred to obtain a material body; S5. After the physical and chemical indicators are tested and qualified, the semi-finished products are discharged, molded and stored; S6. After the microbiological indicators are tested and qualified, packaging and coding are carried out; S7. Finished products will be put into storage after passing random inspection.

4. The production process of the moisturizing stick for skin care and cosmetics according to claim 3, characterized in that: In step S2, the temperature is raised to 80-85°C.

5. The production process of the moisturizing stick for skin care and cosmetics according to claim 3, characterized in that: In step S2, the temperature is lowered to below 70°C, and in steps S3 and S4, the temperature is maintained below 70°C.

6. The production process of the moisturizing stick for skin care and cosmetics according to claim 5, characterized in that: In step S2, the temperature is lowered to 68-70°C, and the temperature is maintained at 68-70°C in both steps S3 and S4.

7. The production process of the moisturizing stick for skin care and cosmetics according to claim 3, characterized in that: In steps S2 to S4, the stirring frequency is 20 to 25 r / min.

8. The production process of the moisturizing stick for skin care and cosmetics according to claim 3, characterized in that: In step S5, the material body is molded by hot filling and demolding, and is filled into the mold when the temperature of the material body is 68-70°C. The temperature of the mold is maintained at 100-150°C during filling. After filling, it is left to stand and demolded after cooling to room temperature to obtain a paste.

9. The production process of the moisturizing stick for skin care and cosmetics according to claim 3, characterized in that: In step S6, after inserting the packaging tube upside down into the outside of the paste, flip the packaging tube so that it is upright, ensuring that the paste slides to the bottom of the packaging tube under the action of gravity, lightly tap the bottom of the packaging tube for fine-tuning to ensure that the paste and the inner wall of the packaging tube are fully embedded.

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