Polypeptide composition with effect of promoting melanogenesis and application thereof
A technology of polypeptide composition and melanin, which is applied in the field of cosmetic peptides, can solve problems such as hair whitening, and achieve the effects of increasing melanin content, preventing damage, and promoting melanin production
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Embodiment 1-7
[0104] The preparation method of embodiment 1-7 composition:
[0105] 1. Add 5, 8, and 9 of the prescription amount into purified water, heat to 80°C, and use it as the water phase;
[0106] 2. Add the prescribed amount of 2, 3, 6, and 7 into another container, heat to 80°C, and use it as the oil phase;
[0107] 3. Add the oil phase to the water phase, stir and homogenize for 5-10 minutes to make the emulsion mixed phase I, and then cool down to 40°C;
[0108] 4. Dissolve 11, 12, 14, 16, and 17 completely with 4, and completely dissolve 13 and 15 with the reserved purified water, add mixed phase I, and adjust the pH to 5.0-6.0 with 10, stir well to make a mixed phase II;
[0109] 5. Homogenize the mixed phase II with a high-pressure homogenizer for 3-10 minutes, and it is ready.
Embodiment 1-6
[0135] Examples 1-6, Comparative Examples 1-7, wherein Comparative Example 7 is a blank control, used as a placebo.
[0136] 4.3 Test equipment
[0137] MPA9 skin multifunctional tester (CK company, Germany)
[0138] 4.4 Test principle
[0139] By comparing the changes in the skin color parameter (L*) value of each test sample before and after use, the percentage of color change is calculated, the percentage of color change is compared with the result of the placebo, and the test sample is evaluated according to the magnitude of the decrease in the percentage of color change. , Intensifies and prolongs the tan effect of the skin.
[0140] Skin chromaticity parameter (L*): refers to the brightness value observed by the subject compared with the pure white reference object, where L* (brightness) refers to the range from pure black (L=0) to pure white (L= 100) brightness range.
[0141] 4.5 Test method
[0142] Before the test, the skin L* value was detected at 0 d, and then...
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