CN106902033A - A kind of scrub cosmetics and preparation method thereof - Google Patents

Abstract

This invention relates to the field of cosmetic technology, and in particular to an exfoliating cream and its preparation method. The exfoliating cream comprises the following components: a moisturizer, a thickener, an anti-allergic soothing agent, a PPG-51/SMDI copolymer, exfoliating particles, a natural plant exfoliant, plant extracts, a pH adjuster, ethanol, fragrance, preservatives, and deionized water. The exfoliating cream of this invention is highly stable, gentle, and non-irritating, and contains various plant extracts, providing the effect of gently removing dead skin cells while replenishing skin moisture.

Description

A kind of exfoliating cream cosmetic and preparation method thereof

technical field

The invention relates to the technical field of cosmetics, in particular to an exfoliating cream cosmetic and a preparation method thereof.

Background technique

The stratum corneum is the outermost part of the epidermis, which is composed of several to dozens of layers of flat, non-nucleated keratinized dead cells that intersect and overlap each other. These keratinocytes are the first natural barrier of the human body. They have the functions of preventing ultraviolet rays, shielding external harmful substances, protecting subcutaneous tissue, and preventing excessive water loss. As the quality of the external environment deteriorates, as well as people's bad living habits and increasing work pressure, the metabolic rate slows down, the keratinocytes cannot fall off naturally, and the accumulation of keratinocytes on the skin surface becomes thicker and thicker, resulting in rough and dull skin , and even lead to clogged pores, resulting in more serious skin problems.

In order to improve rough skin, lack of water, and hard skin, use exfoliating products to accelerate the discharge of old cortex and bad cells in the cortex, promote the growth of new cells, and remove impurities and impurities. Increase the absorption of follow-up skin care products.

Most of the exfoliating cosmetics on the market are traditional scrubs or fruit acid products. Scrub products are not suitable for people with delicate skin and thin stratum corneum because the scrub particles are not gentle enough, which can easily lead to excessive skin exfoliation. Fruit acid products are relatively acidic and irritating, so they are not suitable for people with sensitive skin. In addition, the stability of existing exfoliating cream cosmetics is not good enough, and the phenomenon that the material body becomes rough is prone to occur.

Contents of the invention

Aiming at the deficiencies of existing exfoliating cream cosmetics, the purpose of the present invention is to provide a stable exfoliating cream and a preparation method thereof, which can achieve non-irritating and obvious exfoliating effects.

In order to achieve the above object, the exfoliating cream preparation method provided by the invention comprises the following steps:

(1) Add deionized water into the reaction kettle, and sprinkle Carbopol Ultrez 21 without stirring. After Carbopol Ultrez 21 is completely wetted, start stirring, add propylene glycol under stirring, and disperse evenly.

(2) Heat the reaction kettle to 80-85°C, add the soothing and antisensitizing agent, stir and dissolve evenly, keep warm for 30 minutes, and then turn on cooling water to cool down to 40-45°C.

(3) Add pH adjuster, PPG-51/SMDI copolymer, essence and ethanol, homogenize at low speed.

(4) Add scrub particles, natural plant scrubs, plant extracts and preservatives, and stir evenly to prepare the exfoliating cream.

Wherein, in the step (1), the mass percentage of Carbopol Ultrez 21 is 0.3-0.7%, and the mass percentage of propylene glycol is 8-20%.

Wherein, in the step (2), the soothing and antisensitizing agent can be selected from at least one of dipotassium glycyrrhizinate, aloe vera powder, allantoin, and biological sugar gum-2, and the mass percentage is 0.05-1%.

Wherein, in the step (3), the pH regulator can be selected from at least one of sodium hydroxide, potassium hydroxide, triethanolamine, arginine, and aminomethyl propanol, and the added amount is to adjust the pH of the system to a specified The range (6.0-7.5) shall prevail. The mass percentage of the PPG-51/SMDI copolymer is 3-6%. The mass percent of ethanol is 8-20%. The mass percentage of essence is 0.1%.

Wherein, in the step (4), the abrasive particles can be selected from at least one of polyethylene abrasive particles, polyurethane particles, and silica particles, and the mass percentage is 0.1-2%. The natural plant scrub agent can be selected from at least one of bamboo leaf/stem extract plant particles, almond granules, walnut granules, bamboo charcoal granules, and loofah scrub, and the mass percentage is 0.001-0.5%. The plant extract essence can be selected from at least one of dragon head bamboo extract, lotus flower extract, white water lily root extract and fresh bamboo leek, and the mass percentage is 0.01-0.05%. The preservative is Glydant Plus Liquid composed of DMDM hydantoin/water/butylene glycol/iodopropynyl butyl carbamate, the mass percentage is 0.5%.

The exfoliating cream of the invention has a stable phase structure, a pH value in the range of 6.0-7.5, close to the weakly acidic environment of the skin, and has no irritation when used. The keratin cleansing combination of added scrub particles, PPG-51/SMDI copolymer and natural plant scrub can effectively clean the oily secretions at the hair follicle opening, and gently remove the aged keratin. Formulated with soothing antisensitivity agents and a variety of plant extracts, it can reduce irritation to the skin, enhance anti-inflammatory, anti-allergic, soothing and moisturizing effects, and make the skin moist, white, tender and shiny.

detailed description

In order to better explain the present invention, below in conjunction with specific examples, the present invention will be further described, but not limited to these examples. "%" in the examples represents mass percentage.

Embodiment one

A kind of exfoliating cream, by weight percentage, its raw material component and content are as shown in table 1:

Table 1

This exfoliating cream is prepared through the following steps, and the addition amount of each component is determined according to the mass percentage shown in Table 1:

(1) Add deionized water into the reaction kettle, and sprinkle Carbopol Ultrez 21 without stirring. After Carbopol Ultrez 21 is completely wetted, start stirring, add propylene glycol under stirring, and disperse evenly.

(2) Heat the reaction kettle to 80-85°C, add dipotassium glycyrrhizinate and aloe vera powder, stir and dissolve evenly, keep warm for 30 minutes, turn on cooling water to cool down to 40-45°C.

(3) Add triethanolamine, PPG-51/SMDI copolymer, essence and ethanol, homogenize at low speed.

(4) Add polyethylene abrasive grains, plant particles of dragon head bamboo leaf/stem extract, fresh bamboo leek and GlydantPlus Liquid, and stir well to obtain an exfoliating cream.

Embodiment two

A kind of exfoliating cream, by weight percentage, its raw material component and content are as shown in table 2:

Table 2

This exfoliating cream is prepared through the following steps, and each component determines the amount of addition according to the mass percentage shown in Table 2:

(1) Add deionized water into the reaction kettle, and sprinkle Carbopol Ultrez 21 without stirring. After Carbopol Ultrez 21 is completely wetted, start stirring, add propylene glycol under stirring, and disperse evenly.

(2) Heat the reaction kettle to 80-85°C, add allantoin and bio-glucose gum-2, stir and dissolve evenly, keep warm for 30 minutes, turn on cooling water to cool down to 40-45°C.

(3) Add triethanolamine, PPG-51/SMDI copolymer, essence and ethanol, homogenize at low speed.

(4) Add polyurethane granules, walnut granules, lotus flower extract and Glydant Plus Liquid, and stir evenly to prepare the exfoliating cream.

Embodiment three

A kind of exfoliating cream, by weight percentage, its raw material component and content are as shown in table 3:

table 3

This exfoliating cream is prepared through the following steps, and each component determines the amount of addition according to the mass percentage shown in Table 3:

(1) Add deionized water into the reaction kettle, and sprinkle Carbopol Ultrez 21 without stirring. After Carbopol Ultrez 21 is completely wetted, start stirring, add propylene glycol under stirring, and disperse evenly.

(2) Heat the reaction kettle to 80-85°C, add dipotassium glycyrrhizinate, bio-glucose gum-2 and aloe vera powder, stir and dissolve evenly, keep warm for 30 minutes, turn on cooling water to cool down to 40-45°C.

(3) Add triethanolamine, PPG-51/SMDI copolymer, essence and ethanol, homogenize at low speed.

(4) Add polyethylene scrub granules, almond shell granules, fresh bamboo leek, white water lily root extract and GlydantPlus Liquid, and stir evenly to obtain an exfoliating cream.

Embodiment Four

Stability Test Evaluation

Carry out stability test to exfoliating cream described in embodiment three and commercially available product A.

Test Conditions:

Cold resistance: keep at -20±1°C for a specified time, compare the appearance and smell with the samples stored at 5°C after returning to room temperature, and test the pH value and viscosity.

Illumination: keep the light for a specified time (the light intensity is not less than 1.2×106Lux.hr), return to room temperature and compare the appearance and smell with the samples stored at 5°C, and test the pH value and viscosity.

Heat resistance: keep at 40±1°C for a specified time, compare the appearance and smell with the samples stored at 5°C after returning to room temperature, and test the pH value and viscosity.

Cycle: cycle temperature, 40±1°C and -20±1°C; cycle cycle, replace twice a week; cycle test for a specified time, after returning to room temperature, compare the appearance and smell with the sample stored at 5°C, and test the pH value and viscosity.

The test results are shown in Table 4:

Table 4 Sample Stability Comparison

From Table 4, it can be seen that the appearance, odor, pH value and viscosity of the sample of Example 3 are stable under various test conditions during the test period of three months, and the formulation stability is high. And commercially available product A is unstable under heat-resisting, circulation and light conditions, and is embodied in: the one-month heat-resistant material body fades, and viscosity reduces; The one-month circulating material body fades; And the viscosity increased significantly; the heat-resistant material body faded after two months and three months, and the viscosity decreased significantly. Therefore, the stability of the sample of Example 3 is better than that of the commercially available product A.

Embodiment five

Exfoliation Efficacy Test

The test method is as follows: the subject cleans the skin on the inner side of the flexed arm of the arm, waits for 20 minutes, selects two square areas of 0.8×0.8cm ² , and takes a certain amount of the sample of Example 3 and the commercially available product A to apply to the above-mentioned areas respectively , rub and massage with fingertips for a certain period of time, then rinse with water and rest for half an hour. The exfoliating effect of the sample was characterized by measuring the change value of the transepidermal water loss rate in the skin of the area before and after applying the sample. The test results are shown in Table 5:

Table 5 Comparison of the change value of transepidermal water loss rate

It can be seen from Table 5 that the change value of the skin transepidermal water loss rate using the sample of Example 3 is greater than that of the commercially available product A, indicating that the exfoliating effect of the sample of Example 3 is better than that of the commercially available product A.

Embodiment six

mildness test

The test method is as follows: the subject cleans both sides of the face, wipes dry, and waits for 20 minutes to dry the face. A certain amount of 10% lactic acid was put on filter paper discs, and then pasted on both sides of the nose of the subject, and the tingling sensation on both sides of the nose was scored at 0 minutes, 0.5 minutes, 2.5 minutes, 5 minutes, and 10 minutes.

Clean the sides of the nose and wait for half an hour. Get a certain amount of Example 3 sample and commercially available product A, apply them evenly on both sides of the alar of the nose respectively, stay for 30 seconds, and score the tingling sensation (0 minutes); Score the pain (0.5 minutes); wash and remove the product, and continue to score the tingling sensation on both sides of the nose after washing. The test results are shown in Table 6:

Table 6 Comparison of irritation scores during exfoliation

It can be seen from Table 6 that the skin irritation score of the sample of Example 3 is lower than that of the commercially available product A during the exfoliation process, indicating that the mildness of the sample of Example 3 is higher than that of the commercially available product A.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be considered Within the protection scope of the present invention.

Claims (10)

1. an exfoliating cream, is characterized in that, contains the component of following mass percentage: Moisturizer: 8-20% Thickener: 0.3-0.7% Soothing antisensitizer: 0.05-1% PPG-51/SMDI copolymer: 3-6% Scrub particles: 0.1-2% Natural vegetable scrub: 0.001-0.5% Plant extracts: 0.001-0.05% pH adjuster: the amount added is based on adjusting the pH of the system to the specified range (6.0-7.5) Ethanol: 8-20% Flavor: 0.05-0.1% Preservatives: 0.05-0.5% Make up to 100% with deionized water. The pH of the exfoliating cream is 6.0-7.5. 2. exfoliating cream according to claim 1, is characterized in that, described humectant is propylene glycol. 3. exfoliating cream according to claim 1, is characterized in that, described thickener is Carbopol Ultrez 21. 4. according to the described exfoliating cream of claim 1, it is characterized in that, described soothing antisensitivity agent is selected from at least one in dipotassium glycyrrhizinate, aloe vera powder, allantoin, biological sugar gum-2. 5. The exfoliating cream according to claim 1, characterized in that, the scrub particles can be selected from at least one of polyethylene scrub particles, polyurethane particles, and silica particles. 6. The exfoliating cream according to claim 1, wherein the plant extract essence is selected from at least one of bamboo extract, lotus flower extract, white water lily root extract, and fresh bamboo leek. 7. exfoliating cream according to claim 1, is characterized in that, described pH regulator can be selected from at least one in sodium hydroxide, potassium hydroxide, triethanolamine, arginine, aminomethyl propanol. 8. according to the described exfoliating cream of claim 1, it is characterized in that, described natural plant scrub agent can be selected from leading bamboo leaf/stem extract plant particle, almond shell particle, walnut shell particle, bamboo charcoal particle, loofah scrub particle at least one of the 9. according to the described exfoliating cream of claim 1, it is characterized in that, described preservative is the Glydant Plus Liquid of DMDM hydantoin/water/butylene glycol/iodopropynyl alcohol butyl carbamate combination. 10. exfoliating cream according to claim 1, is characterized in that, described exfoliating cream is prepared by following steps: (1) Add deionized water into the reaction kettle, and sprinkle Carbopol Ultrez 21 without stirring. After Carbopol Ultrez 21 is completely wetted, start stirring, add propylene glycol under stirring, and disperse evenly. (2) Heat the reaction kettle to 80-85°C, add the soothing and antisensitizing agent, stir and dissolve evenly, keep warm for 30 minutes, and then turn on cooling water to cool down to 40-45°C. (3) Add pH adjuster, PPG-51/SMDI copolymer, essence and ethanol, homogenize at low speed. (4) Add scrub particles, natural plant scrubs, plant extracts and preservatives, and stir evenly to prepare the exfoliating cream.