Core Technology: From ‘Unstable’ to ‘All-Weather Protection’The revolutionary breakthrough of Vitamin C Ethyl Ether stems from three technological upgrades:

1. Chemical Structure Modification: Introducing an ethyl group at the 3rd position of Vitamin C forms a stable ether bond, enhancing its antioxidant capacity by 10 times. It maintains over 95% activity in a pH range of 3–8 and retains high stability even after six months of storage at high temperatures (45°C);

2. Optimised transdermal absorption: Its lipophilic properties enhance penetration efficiency through the stratum corneum by 300%. Skin diffusion experiments show that the vitamin C concentration in the dermis reaches 8 times that of ordinary vitamin C within 2 hours;

3. Sustained-release mechanism: After entering cells, it is slowly released through esterase hydrolysis, continuously exerting whitening effects. Clinical validation extends the effective duration to 72 hours.

Multi-functional benefits: A versatile solution for whitening and anti-ageing

- Targeted whitening: Inhibits tyrosinase activity (inhibition rate of 82%), reducing melanin production. After 8 weeks of using an essence containing 2% vitamin C ethyl ether, spot area decreased by 41%, and skin brightness improved by 29%;

- Antioxidant and anti-ageing: Three times the free radical scavenging capacity of ordinary vitamin C, increases collagen synthesis gene (COL1A1) expression by 63%, and improves wrinkle depth by 25%;

- Anti-inflammatory and repairing: Reduces IL-6 release by 58%, suitable for post-sun repair. When used with ceramides, it can improve skin barrier repair efficiency by 40%.

Versatile application: Suitable for all types of formulations

Recommended addition rate: 1%–5%, widely used in:

- Whitening serums: When combined with niacinamide, synergistic effects increase whitening speed by 55%;

- Sunscreen products: Enhances UV protection, reducing the incidence of UVB-induced erythema by 67%;

- Mask systems: Accelerates serum penetration, increasing skin hydration by 38% and improving radiance by 32% after a single use.