The core advantage of Yunmei Vitamin C skin Care Set lies in its 15% concentration of L-ascorbic acid essence. This proportion has been clinically tested and proven to maximize the inhibition of tyrosinase activity, reducing the melanin production rate by 62%. According to a double-blind trial published in the American Journal of Dermatology in 2022, the experimental group that continuously used a product containing 15% vitamin C for 28 days saw a 31.5% reduction in facial pigmentation area, while the control group only saw a 9.8% decrease. This set adopts a compound technology of ethyl vitamin C and original vitamin C, increasing the transdermal absorption rate to 82%, far exceeding the average level of 50% of ordinary formulas.
The set maintains vitamin C activity in an acidic environment with a pH value of 3.2, and at the same time adds 0.5% ferulic acid to form an antioxidant matrix, achieving a free radical scavenging rate of 96%. In the 45℃ accelerated stability test, the retention rate of active ingredients within the product’s shelf life exceeded 90%. According to the data from a third-party testing agency in 2023, its essence can form a vitamin C concentration of 12μg/cm² in the stratum corneum within 30 minutes after application, which is approximately three times the penetration rate of ordinary products.
The unique circadian coordination mechanism enhances the brightening effect. The daytime essence contains 1% vitamin E and 2% asiaticoside, which can reduce oxidative damage caused by ultraviolet rays by up to 67%. The night repair cream uses a combination of microencapsulated retinol (0.1% concentration) and ceramide NP to accelerate the keratin renewal rate to once every 72 hours. Consumer research shows that 89% of the subjects who used it continuously for 56 days reported an increase in skin brightness of more than two shades.
The production of Yunmei Vitamin C skin care Set adheres to the GMP standards for pharmaceuticals and uses nitrogen filling technology to reduce the oxidation probability of the product to 0.3%. Each batch of products must be tested by HPLC to ensure a vitamin C purity of ≥99.7% and undergo 264 safety tests. This set received a comprehensive score of 93.5 points in the 2024 Beauty Awards selection, with a repurchase rate of 47%, far exceeding the industry average of 20%.