A creamy bath salt composition and a method of preparing and using the same

Abstract

The application discloses a creamy bath salt composition and a preparation method and application thereof. The creamy bath salt composition is obtained by optimizing the proportion of polyvinylpyrrolidone, ethanol, polyethylene glycol-400 and water, and has a suitable consistency, can be made into various beautiful shapes through a piping process, and widens product forms and interestingness of the bath salt. Meanwhile, the creamy bath salt composition has good solubility, moisturizing property and use experience. In addition, compared with commercially available products, the product has significant advantages in texture, use convenience and moisturizing effect, and has a scientific and reasonable formula and good stability, so that the product can meet the needs of users and is suitable for industrial production.

Description

Technical Field

[0001] This invention relates to the technical field of personal hygiene products, specifically to a creamy bath salt composition, its preparation method, and its application. Background Technology

[0002] Bath salts are a common bathing product, typically composed of water-soluble inorganic salts, fragrances, and colorants, used to cleanse the skin, soften cuticles, and enhance the bathing experience. Traditional bath salts are mostly in granular or powder form, dissolved directly in the bathtub. However, these products suffer from limited texture, monotonous design, and inconvenient use, failing to meet consumers' demands for aesthetically pleasing and fun products.

[0003] While some shaped bath salt products exist in the current technology, such as bath salt balls and bath salt tablets, these products usually require pressing and are relatively hard, making it impossible to achieve buttercream piping effects. Furthermore, some products add excessive amounts of binders or molding agents in pursuit of styling effects, affecting the product's solubility and user experience. Summary of the Invention

[0004] This application provides a creamy bath salt composition, its preparation method, and its application, to solve the problem mentioned in the background art that existing bath salts are difficult to balance aesthetics and solubility.

[0005] To address the aforementioned technical problems, in a first aspect, this application provides a creamy bath salt composition, comprising the following components by weight: Sodium bicarbonate 70%–80%; Polyvinylpyrrolidone 2%–3%; 10%–15% ethanol; Polyethylene glycol -400 0.3%~0.8%; Pigment content: 0.1%–0.2%; Moisturizer 0.5%–2%; Fragrance 0.1%–0.5%; Water content: 3%–5%.

[0006] In one embodiment, it also includes 0.1% to 0.5% of plant extracts.

[0007] In one embodiment, the plant extract is selected from one or more of aloe vera extract, green tea extract, chamomile extract, and rose extract.

[0008] In one embodiment, the moisturizer is selected from one or more of glycerin, propylene glycol, and sodium hyaluronate.

[0009] In one embodiment, the pigment is selected from one or more of Clay Red, Carmine, Tartrazine, β-carotene, Beetroot Red, Gardenia Blue, Iron Oxide Red, Iron Oxide Yellow, and Iron Oxide Black.

[0010] In one embodiment, the consistency of the creamy bath salt composition was measured at room temperature using a Brookfield viscometer to be 5 Pa·s to 20 Pa·s.

[0011] Secondly, this application also provides a method for preparing a creamy bath salt composition, comprising the following steps: S1: Dissolve polyvinylpyrrolidone in ethanol and mix thoroughly to obtain phase A; S2: Add polyethylene glycol-400, humectant and water to phase A, stir evenly to obtain phase AB; S3: Add sodium bicarbonate to the AB phase and stir to mix evenly to form a paste-like matrix; S4: Add color powder, fragrance and plant extract to the paste matrix and mix evenly until the paste peels off in a uniform, smooth strip on the stirring paddle to obtain the creamy bath salt composition.

[0012] In one embodiment, in step S3, the stirring speed is 100 r / min to 300 r / min, and the stirring time is 5 min to 20 min, until a uniform, particle-free paste matrix is ​​formed.

[0013] In one embodiment, in step S3, the sodium bicarbonate is pre-filtered through an 80-120 mesh sieve before being added, and is added in portions of 1 / 4 to 1 / 3 of the total amount each time, with the mixture stirred thoroughly after each addition before adding the next.

[0014] Thirdly, this application also provides the use of a creamy bath salt composition in the preparation of cleaning products having a creamy piping pattern.

[0015] The aforementioned creamy bath salt composition and its preparation method, through optimizing the ratio of polyvinylpyrrolidone, ethanol, polyethylene glycol-400, and water, achieve a suitable consistency, enabling the creation of various aesthetically pleasing shapes using piping techniques, thus broadening the product forms and appeal of bath salts. It also exhibits excellent solubility, moisturizing properties, and a superior user experience. Furthermore, compared to commercially available products, the product of this invention has significant advantages in texture, ease of use, and moisturizing effect. Its scientifically sound formula demonstrates good stability, meeting user needs and making it suitable for industrial production. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described in detail below. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly" connected to another component, there is no intermediary component.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] Example 1 Weigh out 75.00g sodium bicarbonate, 2.50g polyvinylpyrrolidone, 12.00g ethanol, 0.50g polyethylene glycol-400, 0.15g Cleine red, 1.00g glycerin, 0.30g rose fragrance, 0.30g rose extract, and the remainder water, and set aside.

[0020] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, Clay red, rose fragrance, and rose extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0021] Example 2 Weigh out 70.00g sodium bicarbonate, 3.00g polyvinylpyrrolidone, 15.00g ethanol, 0.80g polyethylene glycol-400, 0.10g carmine, 1.50g propylene glycol, 0.5g lavender fragrance, 0.5g green tea extract, and the remainder water, and set aside.

[0022] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, propylene glycol, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, carmine, lavender fragrance, and green tea extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0023] Example 3 Weigh out 80.00g sodium bicarbonate, 2.00g polyvinylpyrrolidone, 10.00g ethanol, 0.30g polyethylene glycol-400, 0.20g tartrazine, 0.50g sodium hyaluronate, 0.1g jasmine fragrance, 0.1g aloe vera extract, and the remainder water, and set aside.

[0024] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, sodium hyaluronate, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, lemon yellow, jasmine fragrance, and aloe vera extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0025] Example 4 Weigh out 72.00g sodium bicarbonate, 2.80g polyvinylpyrrolidone, 15.00g ethanol, 0.60g polyethylene glycol-400, 0.15g β-carotene, 0.80g glycerin, 0.5g propylene glycol, 0.4g citrus flavoring, 0.4g chamomile extract, and the remainder water, and set aside.

[0026] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, propylene glycol, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, β-carotene, citrus flavor, and chamomile extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous and the paste could be peeled off in a uniform, smooth ribbon-like pattern on a stirring paddle, yielding a creamy bath salt composition.

[0027] Comparative Example 1 The difference from Example 1 is the amount of polyvinylpyrrolidone added. In this comparative example, the amount of polyvinylpyrrolidone added is 1.00g.

[0028] Specifically, weigh out 75.00g sodium bicarbonate, 1.00g polyvinylpyrrolidone, 12.00g ethanol, 0.50g polyethylene glycol-400, 0.15g Cleine red, 1.00g glycerin, 0.30g rose fragrance, 0.30g rose extract, and the remainder water, and set aside.

[0029] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, Clay red, rose fragrance, and rose extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0030] Comparative Example 2 The difference from Example 1 is the amount of polyvinylpyrrolidone added. In this comparative example, the amount of polyvinylpyrrolidone added is 5.00g.

[0031] Specifically, weigh out 75.00g sodium bicarbonate, 5.00g polyvinylpyrrolidone, 12.00g ethanol, 0.50g polyethylene glycol-400, 0.15g Cleine red, 1.00g glycerin, 0.30g rose fragrance, 0.30g rose extract, and the remainder water, and set aside.

[0032] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, Clay red, rose fragrance, and rose extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0033] Comparative Example 3 The difference from Example 1 is the amount of polyethylene glycol-400 added. In this comparative example, the amount of polyethylene glycol-400 added is 0.10g.

[0034] Specifically, weigh out 75.00g sodium bicarbonate, 2.50g polyvinylpyrrolidone, 12.00g ethanol, 0.10g polyethylene glycol-400, 0.15g Cleine red, 1.00g glycerin, 0.30g rose fragrance, 0.30g rose extract, and the remainder water, and set aside.

[0035] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, Clay red, rose fragrance, and rose extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0036] Comparative Example 4 The difference from Example 1 is the amount of polyethylene glycol-400 added. In this comparative example, the amount of polyethylene glycol-400 added is 1.00g.

[0037] Specifically, weigh out 75.00g sodium bicarbonate, 2.50g polyvinylpyrrolidone, 12.00g ethanol, 1.00g polyethylene glycol-400, 0.15g Cleine red, 1.00g glycerin, 0.30g rose fragrance, 0.30g rose extract, and the remainder water, and set aside.

[0038] First, polyvinylpyrrolidone was dissolved in ethanol and stirred at 200 rpm for 10 minutes at room temperature until homogeneous, yielding phase A. Next, polyethylene glycol-400, glycerin, and water were added to phase A and stirred at 200 rpm for 5 minutes until homogeneous, yielding phase AB. Then, sodium bicarbonate, which had passed through a 100-mesh sieve, was added to phase AB in three portions, with stirring at 250 rpm for 5 minutes after each addition, until a uniform, particle-free paste matrix was formed. Finally, Clay red, rose fragrance, and rose extract were added to the paste matrix and stirred at 150 rpm for 15 minutes until homogeneous, with the paste peeling off in a uniform, smooth ribbon-like pattern on the stirring paddle, yielding a creamy bath salt composition.

[0039] Comparative Example 5 Commercially available ordinary granular bath salts (a certain brand, whose main ingredients are sodium chloride, sodium bicarbonate, and fragrance).

[0040] Comparative Example 6 Commercially available bath salt soap (a certain brand, whose main ingredients are sodium bicarbonate, citric acid, and surfactants).

[0041] Performance testing The bath salt products prepared in Examples 1-4 and Comparative Examples 1-6 were subjected to the following performance tests: 1. Consistency test: The consistency value of each product was measured at 25°C using a Brookfield viscometer, and the results are shown in Table 1.

[0042] Table 1 As shown in Table 1, the consistency values ​​of the products obtained in Examples 1-4 are all within the range of 10 Pa·s to 20 Pa·s, indicating good paste quality suitable for piping and molding. Comparative Examples 1 and 3 could not be molded due to their excessively thin paste; while Comparative Examples 2 and 4 were difficult to extrude due to their excessively thick paste, thus failing to meet the requirements for piping.

[0043] 2. Solubility test: Take 5g of each example and comparative sample, add them to 200mL of 40℃ warm water, and record the time for complete dissolution. The results are shown in Table 2.

[0044] Table 2 As shown in Table 2, the products prepared in Examples 1-4 all had a complete dissolution time of less than 60 seconds, indicating a fast dissolution rate and no residue.

[0045] 3. pH test: Each example and comparative sample was prepared into a 1% aqueous solution, and the pH value was measured using a pH meter. The results are shown in Table 3.

[0046] Table 3 As shown in Table 3, the pH values ​​of the products prepared in Examples 1-4 are all close to neutral, and the properties are mild. Compared with commercially available products, the pH value of the present invention is closer to the range of human skin's tolerance, with lower irritation, and is suitable for a wider range of people, especially those with sensitive skin.

[0047] 4. Skin moisturizing effect test: Using a skin moisture meter, the skin moisture content was measured before and 30 minutes after each sample was treated, and the increase rate of skin moisture content was calculated. The results are shown in Table 4.

[0048] Table 4 As shown in Table 4, the moisturizing effects of the products prepared in Examples 1-4 are significantly better than those in Comparative Examples 5 and 6, while the moisturizing effects of Comparative Examples 1-4 are significantly reduced due to improper formulation ratios. This demonstrates that in the specific creamy matrix of this invention, moisturizers and active plant extracts can be effectively delivered and exert a synergistic effect of immediate hydration and moisture retention.

[0049] 5. Stability test: The samples of each example and comparative example were placed at 40℃ and 75% relative humidity for 3 months, and the appearance changes were observed. The results are shown in Table 5.

[0050] Table 5 As shown in Table 5, the products obtained in Examples 1-4 showed no changes in appearance, consistency, or odor, demonstrating good stability. This indicates that the formulation system of the present invention is homogeneous and robust, capable of maintaining a "creamy" texture for a long time without phase separation, hardening, or deterioration. In contrast, the stability of Comparative Examples 1-4 was insufficient, failing to guarantee product quality and shelf life.

[0051] 6. Sensory evaluation: 30 volunteers (15 men and 15 women, aged 20-45) were recruited to take a bath using the samples of each example and comparative example. They were rated on four aspects: gentleness, cleanliness, moisturizing, and ease of rinsing (out of 10). The average value of the results is shown in Table 6.

[0052] Table 6 As shown in Table 6, the products obtained in Examples 1-4 all achieved a comprehensive score of 9.3, demonstrating excellent performance in terms of gentleness, cleanliness, moisturizing, and ease of rinsing. This indicates that the products of the present invention provide users with a comprehensive and superior bathing experience.

[0053] In summary, the creamy bath salt composition provided by this invention, through optimized proportions of polyvinylpyrrolidone, ethanol, polyethylene glycol-400, and water, achieves a suitable consistency, enabling the creation of various aesthetically pleasing shapes using piping techniques, thus broadening the product forms and appeal of bath salts. It also exhibits excellent solubility, moisturizing properties, and a superior user experience. Furthermore, compared to commercially available products, this invention offers significant advantages in texture, ease of use, and moisturizing effect. Its scientifically sound formula demonstrates good stability, meeting user needs and making it suitable for industrial production.

[0054] The options described in the above method embodiments are also applicable to this embodiment, and will not be detailed here. The remaining content of this application's embodiments can be found in the above method embodiments, and will not be repeated in this embodiment.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A creamy bath salt composition, characterized in that, By weight, it includes the following components: Sodium bicarbonate 70%–80%; Polyvinylpyrrolidone (PVP) 2%–3%; 10%–15% ethanol; Polyethylene glycol -400 0.3%~0.8%; Pigment content: 0.1%–0.2%; Moisturizer 0.5%–2%; Fragrance 0.1%–0.5%; Water content: 3%–5%.

2. The creamy bath salt composition according to claim 1, characterized in that, It also includes 0.1% to 0.5% plant extracts.

3. The creamy bath salt composition according to claim 2, characterized in that, The plant extract is selected from one or more of aloe vera extract, green tea extract, chamomile extract, and rose extract.

4. The creamy bath salt composition according to claim 1, characterized in that, The moisturizer is selected from one or more of glycerin, propylene glycol, and sodium hyaluronate.

5. The creamy bath salt composition according to claim 1, characterized in that, The pigment is selected from one or more of the following: Clay Red, Carmine, Tartrazine, β-carotene, Beetroot Red, Gardenia Blue, Iron Oxide Red, Iron Oxide Yellow, and Iron Oxide Black.

6. The creamy bath salt composition according to any one of claims 1, characterized in that, The consistency of the creamy bath salt composition was measured at room temperature using a Brookfield viscometer, and the value ranged from 5 Pa·s to 20 Pa·s.

7. A method for preparing a creamy bath salt composition according to any one of claims 1-6, characterized in that, Includes the following steps: S1: Dissolve polyvinylpyrrolidone in ethanol and mix thoroughly to obtain phase A; S2: Add polyethylene glycol-400, humectant and water to phase A, stir evenly to obtain phase AB; S3: Add sodium bicarbonate to the AB phase and stir to mix evenly to form a paste-like matrix; S4: Add color powder, fragrance and plant extract to the paste matrix and mix evenly until the paste peels off in a uniform, smooth strip on the stirring paddle to obtain the creamy bath salt composition.

8. The method for preparing the creamy bath salt composition according to claim 7, characterized in that, In step S3, the stirring speed is 100r / min to 300r / min, and the stirring time is 5min to 20min, until a uniform, particle-free paste matrix is ​​formed.

9. The method for preparing the creamy bath salt composition according to claim 7, characterized in that, In step S3, the sodium bicarbonate is pre-filtered through an 80-120 mesh sieve before being added, and is added in portions of 1 / 4 to 1 / 3 of the total amount each time, with the mixture stirred thoroughly after each addition before adding the next.

10. Use of a creamy bath salt composition according to any one of claims 1-5 in the preparation of cleaning products having a creamy piping pattern.

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