Whitening and relieving composition suitable for sensitive skin and application of whitening and relieving composition

Abstract

The invention discloses a whitening and relieving composition suitable for sensitive skin and application of the whitening and relieving composition, and belongs to the technical field of cosmetics. The composition takes vetiver extract, 4-tert-butyl cyclohexanol, purple coneflower extract and salvia miltiorrhiza extract as active ingredients, the active ingredients are compounded according to a specific mass ratio, and the dual effects of relieving and whitening can be achieved through instant nerve reaction calming, deep anti-inflammatory repair and multi-channel hyperpigmentation inhibition. The composition can be used for preparing various cosmetics such as toner and essence. Experiments prove that the composition is mild and non-irritant, can effectively repair sensitive skin barriers, fade red and brighten, has the effect obviously better than that of a composition without any active component or replacement component, and provides a new thought for sensitive skin effect skin care.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, specifically to a whitening and soothing composition suitable for sensitive skin and its application. Background Technology

[0002] Sensitive skin is a skin condition characterized by impaired skin barrier function, hyperreactivity of nerves and blood vessels, and susceptibility to physical, chemical, and psychological stimuli, resulting in burning, stinging, itching, and tightness, often accompanied by visible symptoms such as redness and flaking. This type of skin has low tolerance to external stimuli and reacts strongly to many common functional cosmetic ingredients (such as high concentrations of vitamin C, fruit acids, and retinol), easily leading to intolerance.

[0003] In terms of skincare needs, people with sensitive skin also have demands for whitening and anti-aging. However, traditional whitening ingredients such as hydroquinone, kojic acid, high-concentration niacinamide, and resorcinol derivatives often have a certain degree of irritation, easily triggering inflammatory reactions in sensitive skin, leading to a deterioration of skin condition, and even inducing post-inflammatory hyperpigmentation, creating a vicious cycle of "the more you whiten, the darker you become." Therefore, developing skincare products that can effectively soothe sensitivity, repair the skin barrier, and achieve whitening and brightening while being sufficiently gentle has become a significant challenge in the cosmetics industry.

[0004] Currently, most products on the market targeting sensitive skin focus on simple moisturizing and soothing, with relatively limited efficacy. A few products claiming to combine soothing and whitening functions often employ a formula approach that adds relatively mild whitening agents (such as ascorbate glucoside and dipotassium glycyrrhizate) to a basic soothing system. However, the whitening effects of these ingredients are often weak and slow-acting, and they primarily focus on inhibiting a single pathway of melanin production. They lack a systematic strategy to address the complex factors commonly affecting sensitive skin, such as micro-inflammatory states, barrier damage, and oxidative stress that lead to dull skin tone.

[0005] Furthermore, current technologies for immediate soothing of sensitive skin often utilize traditional soothing ingredients such as bisabolol and licorice extract, but there is still room for improvement in their speed of action and specificity for neurosensitive skin. On the repair level, while barrier-repairing ingredients such as ceramides and squalane exist, they primarily focus on replenishing the physical barrier, with insufficient attention paid to anti-inflammatory and antioxidant repair at the cellular level.

[0006] Therefore, there is an urgent need to develop a novel composition that can address the complex pathophysiological state of sensitive skin by constructing a complete system that ranges from immediate calming of nerve responses to deep anti-inflammatory repair, long-lasting antioxidant effects, and multi-pathway inhibition of pigmentation, thereby achieving the dual goals of safe and effective soothing and whitening. Summary of the Invention

[0007] In order to overcome the shortcomings of the existing technology, the present invention provides a whitening and soothing composition suitable for sensitive skin and its application. The composition can immediately calm nerve reactions, achieve deep anti-inflammatory repair and multi-pathway inhibition of pigmentation, and achieve effective soothing and whitening effects.

[0008] In a first aspect, the present invention provides a whitening and soothing composition suitable for sensitive skin, the composition comprising vetiver extract, 4-tert-butylcyclohexanol, echinacea extract, and tanshinone extract as active ingredients.

[0009] The mass ratio of vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and tanshinone extract in the composition is (7-12):(2-5):(10-15):(5-8).

[0010] Further, preferably, the mass ratio of vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and tanshinone extract in the composition is (9-10):(3-4):(12-14):(6-7).

[0011] Secondly, the present invention provides the application of a whitening and soothing composition suitable for sensitive skin in the preparation of cosmetics.

[0012] Preferably, the content of the whitening and soothing composition suitable for sensitive skin in the cosmetic is 0.5-20 wt%; more preferably, the content is 3-15 wt%.

[0013] Preferably, the cosmetic is selected from any one of toner, serum, lotion, face cream, eye cream, essence, hand cream, and body lotion.

[0014] Preferably, the cosmetic is selected from any one of serum, lotion, and hand cream.

[0015] Furthermore, the cosmetic also includes at least one of the following: emulsifier, thickener, moisturizer, preservative, pH adjuster, chelating agent, antioxidant, fragrance, pigment, and solvent.

[0016] Preferably, the emulsifier is selected from at least one of glyceryl stearate, sodium stearate, and sodium lauryl sulfate.

[0017] Preferably, the thickener is selected from at least one of xanthan gum, gum arabic, sodium alginate, and sodium hyaluronate.

[0018] The moisturizer is selected from at least one of glycerin, propylene glycol, 1,3-propanediol, and panthenol.

[0019] Vetiver extract primarily consists of volatile terpenoids such as vetiverol and vetiverone, as well as non-volatile components like flavonoids, phenolic acids, and water-soluble polysaccharides. The core functions of vetiver extract lie in moisturizing and repairing, and soothing and anti-inflammatory effects: water-soluble polysaccharides possess excellent hydrophilicity and film-forming properties, forming a breathable moisturizing film on the skin surface to lock in moisture in the stratum corneum and improve dry, rough skin; terpenoids and phenolic acids inhibit the release of inflammatory factors, relieving redness and stinging caused by external stimuli, making it especially suitable for sensitive skin skincare products.

[0020] 4-T-butylcyclohexanol is a synthetically produced cyclic alcohol compound with a stable chemical structure. It is commonly used in cosmetics as a soothing agent and odor suppressant. Its main function is to relieve burning, stinging, and other discomforts by acting on nerve receptors in the skin, reducing neuronal sensitivity. It is particularly suitable for repair products for sensitive or damaged skin. Furthermore, it effectively neutralizes odors produced by bacteria breaking down sweat, and is therefore widely used in antiperspirants and deodorant products. This ingredient has high safety and good compatibility with other active ingredients. It is often combined with moisturizers and antioxidants to enhance the overall soothing effect of the product and help maintain a healthy skin barrier.

[0021] Purple coneflower extract, derived from the aerial parts or roots of Echinacea purpurea, is rich in active ingredients such as chicoric acid, polysaccharides, alkanamides, and flavonoids. In cosmetics, it is known for its immune-boosting and anti-inflammatory properties, enhancing the skin's natural defenses and reducing damage caused by environmental stressors. This extract possesses strong antioxidant capabilities, neutralizing free radicals and slowing collagen degradation, thus combating wrinkles and sagging. Simultaneously, it soothes skin inflammation caused by dryness or irritation, promotes cell renewal and repair, and is suitable for anti-aging and soothing moisturizing products.

[0022] Salvia miltiorrhiza extract is derived from the root of the plant Salvia miltiorrhiza, belonging to the Lamiaceae family. Its main active ingredients are tanshinone, salvianolic acid, and various phenolic compounds. In cosmetics, it is known for its microcirculation-promoting and anti-inflammatory effects, which can improve dull skin and enhance overall complexion. Tanshinone has estrogen-like activity, regulating sebum secretion and helping to alleviate acne and enlarged pores. Simultaneously, its powerful antioxidant properties inhibit lipid peroxidation, protect collagen structure, and slow down signs of aging.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a whitening and soothing composition suitable for sensitive skin and its application. The composition can instantly calm nerve responses, achieve deep anti-inflammatory repair, and inhibit pigmentation through multiple pathways, thus achieving safe and effective soothing and whitening effects.

[0024] In this invention, vetiver extract and 4-tert-butylcyclohexanol act as soothing agents, rapidly reducing skin nerve sensitivity; while purple coneflower extract plays a core repairing role; and tanshinone extract, as a "cleaner and brightening expert," synergistically enhances the overall anti-inflammatory and whitening effects. The four ingredients work together to construct a complete chain from immediate soothing to deep repair to long-lasting defense and brightening, providing a new approach for soothing, repairing, whitening, and brightening sensitive skin. It can be widely applied to various cosmetic formulations such as lotions, creams, and serums, and is suitable for daily skincare routines for sensitive skin, making it highly practical. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. The described embodiments are only some preferred embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Unless otherwise specified, the experimental methods used in the embodiments are conventional or common methods in the art, and the materials and reagents used are commercially available unless otherwise specified.

[0027] The raw materials used in the examples and comparative examples are described below: Vetiver extract: purchased from Givaudan; Purple coneflower extract: purchased from Shanghai Hanmei Biotechnology Co., Ltd.; 4-tert-butylcyclohexanol: purchased from Wuhan Chengtian Fine Chemical Co., Ltd.; Salvia miltiorrhiza extract: purchased from Jiangsu Jiujia Biotechnology Co., Ltd.; Scutellaria baicalensis extract: purchased from Gansu Yishengxiang Biotechnology Co., Ltd.; Purslane extract: purchased from Gansu Yishengxiang Biotechnology Co., Ltd.

[0028] Unless otherwise specified, all components and raw materials used in the embodiments and comparative examples of this invention are commercially available, and the same type of components and raw materials are used in each parallel experiment.

[0029] Example 1 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, purple coneflower extract, and tanshinone extract in a mass ratio of 9:4:14:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0030] Example 2 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and tanshinone extract in a mass ratio of 10:3:12:6, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0031] Example 3 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, purple coneflower extract, and tanshinone extract in a mass ratio of 7:5:10:8, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0032] Example 4 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and tanshinone extract in a mass ratio of 12:2:15:5, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0033] Comparative Example 1 A whitening and soothing composition suitable for sensitive skin is obtained by mixing 4-tert-butylcyclohexanol, purple coneflower extract, and tanshinone extract in a mass ratio of 4:14:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0034] Comparative Example 2 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, purple coneflower extract, and tanshinone extract in a mass ratio of 9:14:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0035] Comparative Example 3 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, and tanshinone extract in a mass ratio of 9:4:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0036] Comparative Example 4 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, and echinacea extract in a mass ratio of 9:4:14, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0037] Comparative Example 5 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, purslane extract and tanshinone extract in a mass ratio of 9:4:14:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0038] Comparative Example 6 A whitening and soothing composition suitable for sensitive skin is obtained by mixing vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and scutellaria baicalensis extract in a mass ratio of 9:4:14:7, with a total mass of 50g, and passing the mixture through a 120-mesh sieve.

[0039] Table 1. Raw material ratios (by mass) for Examples 1-4 and Comparative Examples 1-6 Group Vetiver extract 4-tert-butylcyclohexanol Purple coneflower extract Salvia miltiorrhiza extract Purslane extract Scutellaria baicalensis extract Example 1 9 4 14 7 / / Example 2 10 3 12 6 / / Example 3 7 5 10 8 / / Example 4 12 2 15 5 / / Comparative Example 1 / 4 14 7 / / Comparative Example 2 9 / 14 7 / / Comparative Example 3 9 4 / 7 / / Comparative Example 4 9 4 14 / / / Comparative Example 5 9 4 / 7 14 / Comparative Example 6 9 4 14 / / 7 Note: " / " indicates that the component is not present.

[0040] Performance verification tests were conducted on the whitening and soothing compositions suitable for sensitive skin prepared in Examples 1-4 and Comparative Examples 1-6.

[0041] 1. Mouse skin irritation test: Sample preparation: The whitening and soothing compositions suitable for sensitive skin prepared in Examples 1-4 and Comparative Examples 1-6 were prepared into three concentrations of sterile deionized water at low, medium and high levels of 0.01 g / mL, 0.1 g / mL and 0.2 g / mL, respectively, for later use.

[0042] Experimental subjects: BALB / c nude mice, 6 mice per group (3 female and 3 male mice randomly selected). 50 μL of the solution was applied to the left side of the mouse behind the ear (where the skin is thin), twice daily, once in the morning and once in the evening (8 hours apart); for 4 consecutive weeks, the mice's behavior and skin condition were observed daily. Scoring was performed according to the criteria in Table 2 below: Table 2 Skin Irritation Scoring Criteria Mouse skin condition Rating / points Normal skin 5 Mild irritation (redness, mild rash, dryness, peeling, etc.) 3 Rash, swelling, ulcers, blisters, scratching 2 Poor performance, death 0 Table 3 Results of skin irritation test 4 weeks later

[0043] As shown in Table 3, the whitening and soothing compositions for sensitive skin described in Examples 1-4 all induced adverse skin reactions in mice. The skin behind the left ear of all mice showed obvious, visually identifiable irritation, including redness, rashes, and peeling. There was no significant difference in adverse reactions between the left and right ears. This indicates that the whitening and soothing compositions for sensitive skin described in Examples 1-4 are gentle and skin-friendly. In summary, the compositions in Examples 1-4 are gentle and skin-friendly, non-irritating, and suitable for sensitive skin.

[0044] 2. Soothing performance test Experimental Preparation: Cell line: RAW264.7 macrophages (purchased from the Cell Bank of the Chinese Academy of Sciences). Culture media: DMEM high-glucose medium (containing 10% fetal bovine serum, 100 U / mL penicillin, and 100 μg / mL streptomycin), serum-free DMEM medium (used for sample dilution and inflammation induction). Inflammation inducer: Lipopolysaccharide (LPS, Escherichia coli O111:B4 type, purity ≥99%), prepared into a 1 μg / mL solution using serum-free DMEM medium. Detection reagents: Griess reagent (containing Reagent A: 1% sulfonamide aqueous solution; Reagent B: 0.1% N-naphthylethylenediamine hydrochloride aqueous solution), sodium nitrate standard.

[0045] Experimental group: The whitening and soothing compositions suitable for sensitive skin in Examples 1-4 were prepared according to the formula, diluted to a final concentration of 20 mg / mL with serum-free DMEM medium, and sterilized by filtration through a 0.22 μm sterile filter membrane for later use; Control group: The compositions of Comparative Examples 1-6 were diluted to a final concentration of 20 mg / mL using the same method, and then filtered through a 0.22 μm sterile filter membrane for sterilization and use. Experimental Methods: RAW264.7 cells were seeded in 96-well plates and cultured for 24 h. LPS (final concentration 1 μg / mL) was added to induce inflammation, along with different samples (final concentration 5%), and the cells were cultured for another 24 h. The blank group received neither LPS nor samples, while the model group received LPS but no samples. After culture, the supernatant was collected, and NO release was measured using the Griess reagent method. The NO inhibition rate was calculated as follows: Inhibition rate (%) = (NO content in the model group - NO content in the sample group) / (NO content in the model group - NO content in the blank group) × 100%. Each sample was measured in parallel six times, and the average value was taken.

[0046] Table 4. Data on Soothing Efficacy Verification Group Inhibition rate % at 1 mg / mL Inhibition rate % at 5 mg / mL Inhibition rate % at 10 mg / mL <![CDATA[IC 50 (mg / mL)]]> Example 1 19.4±2.1 55.7±3.5 78.5±4.2 4.92 Example 2 19.2±1.8 51.4±3.1 75.2±3.8 5.17 Example 3 18.8±2.0 49.6±2.9 71.3±4.5 5.34 Example 4 18.5±2.2 47.3±3.3 68.7±4.0 5.53 Comparative Example 1 15.1±1.5 31.4±2.5 46.2±3.6 12.15 Comparative Example 2 14.5±1.9 32.2±3.2 44.8±3.9 13.16 Comparative Example 3 13.2±1.2 24.5±2.1 42.6±2.8 13.85 Comparative Example 4 12.3±1.7 21.6±2.8 39.4±3.5 15.41 Comparative Example 5 17.1±1.9 30.9±3.0 52.1±3.7 9.84 Comparative Example 6 17.5±2.3 36.2±3.8 55.4±4.5 9.52 According to the data in Table 4, 1) the NO inhibition rates of the compositions in Examples 1-4 at different concentrations were all higher than those of Comparative Examples 1-6, IC50 50 The smaller the value, the stronger its anti-inflammatory and soothing activity. 2) Examples 1-4 all showed NO inhibition rates exceeding 68% at a concentration of 10 mg / mL, while Comparative Examples 1-6 showed inhibition rates of only 55.4% at the same concentration, with most below 50%, far lower than the levels of the examples. 3) IC50 values ​​of Examples 1-4 50 The IC50 values ​​for comparative examples 1-6 were between 4.92 and 5.53 mg / mL. 50 All concentrations were greater than 9 mg / mL, with some even exceeding 12 mg / mL, indicating that the examples clearly exhibited stronger anti-inflammatory and soothing activity compared to the comparative examples. 4) Compared to Example 1, Comparative Examples 1-4 each lacked one core component, resulting in lower NO inhibition rates and IC50 values. 50The efficacy of the components was significantly reduced. Compared with Example 1, Comparative Examples 5-6, which replaced Echinacea purpurea extract with Portulaca oleracea extract and Salvia miltiorrhiza extract with Scutellaria baicalensis extract respectively, also showed a significant decrease in efficacy. This confirms that there is a synergistic effect among Vetiver extract, 4-tert-butylcyclohexanol, Echinacea purpurea extract, and Salvia miltiorrhiza extract, and none of them can be omitted. This data scientifically verifies that the composition of the present invention has excellent anti-inflammatory and soothing effects, providing a valid basis for its suitability for sensitive skin skincare products.

[0047] Application examples Application Examples 1-4 and Comparative Application Examples 1-6 of the present invention provide a whitening essence, the components (mass percentage) of which are shown in Table 4; wherein, Application Examples 1-4 and Comparative Application Examples 1-6 respectively use the whitening and soothing compositions suitable for sensitive skin described in Examples 1-4 and Comparative Examples 1-6.

[0048] Table 5. Ingredients of Whitening Essence

[0049] The preparation method of the whitening essence includes the following steps: Xanthan gum, carbomer, and sodium hyaluronate were added to sterile deionized water and heated to 55°C, then stirred until completely dissolved. Arginine, histidine, and a whitening and soothing composition suitable for sensitive skin were then added and stirred thoroughly. Panthenol, propylene glycol, and glyceryl stearate were then added and stirred thoroughly. The mixture was homogenized and emulsified at 2000 rpm for 15 minutes using a high-speed homogenizer, cooled to room temperature, and discharged to obtain the whitening essence.

[0050] 1. Human patch test Experimental methods: Human patch tests were conducted to verify the irritation of sensitive skin by this application (Examples 1-4) and the comparative application (Examples 1-6). The specific experimental methods were in accordance with the "Cosmetic Safety Technical Specifications" (2015 edition). The grading standards for adverse skin reactions are shown in Table 6.

[0051] 150 volunteers were recruited, aged 18-53 years, with an average age of 24.6 years. Using a suitable patch tester, a closed patch test method was employed. An equal volume of 25 μL of the test substance was placed in the patch tester, which was then applied to the volunteer's arm with hypoallergenic adhesive tape. Gently pressing the tape ensured even application to the skin. The test substance was removed after 24 hours. Skin reactions were observed at 0.5, 24, and 48 hours after patch removal. Adverse skin reactions were recorded and are shown in Table 7.

[0052] Table 6. Grading Standards for Adverse Skin Reactions Rating levels Skin reaction 0 negative reaction 1 The suspected reaction only showed faint erythema. 2 Weak positive reaction (erythema reaction); erythema, infiltration, edema, and papules may be present. 3 Strong positive reaction (herpes reaction); erythema, infiltration, edema, papules, vesicles; the reaction may extend beyond the test area. 4 Extremely strong positive reaction (confluent herpes simplex reaction); obvious erythema, severe infiltration, edema, confluent herpes simplex; reaction extends beyond the test area. Table 7. Results of adverse skin reactions

[0053] The patch test results showed that all subjects had a negative skin reaction score of 0 at all observation time points, with no cases of suspected erythema, weakly positive erythematous edema, or strongly positive herpes. Specifically, the 30 volunteers in Examples 1-4 all had skin reaction scores of 0 at 0.5h, 24h, and 48h after removal of the test substance; compared with the 30 volunteers in each group in Examples 1-6, the skin reaction scores at the corresponding observation time points were also all 0, with no skin irritation.

[0054] In summary, under the conditions of this experiment, the test substances used in Examples 1-4 and Comparative Examples 1-6 did not cause skin irritation in people with sensitive skin and demonstrated good skin safety.

[0055] 2. Transepidermal water loss rate test This experiment verifies the effects of the whitening serums prepared in Application Examples 1-4 and Comparative Application Examples 1-6 on skin soothing and barrier repair capabilities, including the following steps: Sixty volunteers with sensitive skin and skin barrier damage (TEWL ≥ 20 g / hm2) were recruited. On the day of the visit, volunteers were not allowed to use any skincare or whitening products on their faces. After washing their faces, they sat quietly for 20 minutes in an air-conditioned room with a temperature of 21±1℃ and humidity of 50±10%. They were then randomly divided into 10 groups of 6 people each. The initial TEWL and initial a* values ​​of each volunteer's left and right sides of the face were measured using the TMHex (Courage+Khazaka) transepidermal water loss probe and the Colorimeter CL400 color probe, and the average values ​​were calculated. The same amount of serum was applied to the face of each group of volunteers twice a day, morning and evening. The post-treatment TEWL and post-treatment a* values ​​of the facial skin were measured again on days 14 and 28, and the average values ​​were calculated. The improvement rate (%) was then calculated using the corresponding average values ​​according to the following formula: TEWL value improvement rate (%) = (initial TEWL value - TEWL value after use) / initial TEWL value × 100%; a* value improvement rate (%) = (initial a* value - a* value after use) / initial a* value × 100%; Among them, the higher the TEWL value improvement rate, the stronger the skin barrier damage repair ability of the serum; the higher the a* value improvement rate, the stronger the soothing and redness-reducing ability of the serum; the results are shown in Table 8: Table 8 Test Result Record Sheet

[0056] According to the data in Table 8, the TEWL improvement rate of Application Examples 1-4 at 28 days was 20.94%-24.82%, significantly higher than the 11.37%-13.58% of the control examples 1-4, and also higher than the 15.43%-16.59% of the control examples 5-6. Simultaneously, the a* value improvement rate of Application Examples 1-4 at 28 days was 14.71%-15.75%, significantly higher than the 8.95%-9.82% of the control examples 1-4, and the 10.55%-10.94% of the control examples 5-6. These data indicate that the whitening essence of Application Examples 1-4 is significantly superior to the control examples 1-6 in terms of skin barrier repair (TEWL value improvement) and redness relief (a* value improvement). This further suggests that the combination of Vetiver extract, 4-tert-butylcyclohexanol, Echinacea purpurea extract, and Salvia miltiorrhiza extract can synergistically enhance skin barrier repair and redness relief effects.

[0057] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A whitening and soothing composition suitable for sensitive skin, characterized in that, The active ingredients include: vetiver extract, 4-tert-butylcyclohexanol, echinacea extract, and tanshinone extract.

2. The whitening and soothing composition for sensitive skin according to claim 1, characterized in that, The mass ratio of vetiver extract, 4-tert-butylcyclohexanol, echinacea extract and tanshinone extract in the composition is (7-12):(2-5):(10-15):(5-8).

3. The whitening and soothing composition for sensitive skin according to claim 2, characterized in that, The mass ratio of Vetiver extract, 4-tert-butylcyclohexanol, Echinacea purpurea extract and Salvia miltiorrhiza extract in the composition is (9-10):(3-4):(12-14):(6-7).

4. The use of the whitening and soothing composition for sensitive skin according to any one of claims 1-3 in the preparation of cosmetics.

5. The application according to claim 4, characterized in that, The content of the whitening and soothing composition suitable for sensitive skin in the cosmetic product is 0.5-20 wt%.

6. The application according to claim 5, characterized in that, The content of the whitening and soothing composition suitable for sensitive skin in the cosmetic product is 3-15 wt%.

7. The application according to claim 4, characterized in that, The cosmetic product mentioned is selected from any one of toner, serum, lotion, face cream, eye cream, essence, hand cream, and body lotion.

8. The application according to claim 5, characterized in that, The cosmetics also include at least one of the following: emulsifiers, thickeners, moisturizers, preservatives, pH adjusters, chelating agents, antioxidants, fragrances, pigments, and solvents.

9. The application according to claim 8, characterized in that, The emulsifier is selected from at least one of glyceryl stearate, sodium stearate, and sodium lauryl sulfate.

10. The application according to claim 8, characterized in that, The thickener is selected from at least one of xanthan gum, gum arabic, sodium alginate, and sodium hyaluronate.

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