🛡️ 100% Authentic – Japan domestic version
🚚 Ships from Tokyo
✨ Fresh stock
🛍️ Same product sold in Japanese beauty stores
Quality First Derma Laser Super Glutathione 100 Mask 7 Sheets is a brightening sheet mask around stabilised Glutathione and a 5-type Vitamin C complex — targeting two different stages of the melanin cycle simultaneously for compounding brightening. Glutathione is popular in Southeast Asian and South Asian brightening skincare and now gaining mainstream traction in Japan.
How it works: Glutathione and Vitamin C inhibit melanin at different steps in the synthesis pathway — Glutathione redirects the Dopa pathway while Vitamin C inhibits tyrosinase. Applied together they provide broader, faster brightening than either alone — the basis of the W-brightening approach common in premium Japanese products.
Known in Japan as ダーマレーザー スーパーグルタチオン100マスク 7枚入.
The stabilised glutathione addresses a key formulation challenge as standard glutathione degrades quickly in aqueous solution before reaching the skin. Quality First stabilisation technology maintains glutathione activity through the product use period, ensuring the concentration delivered to the skin during each mask session matches the label claim. For South Asian, Southeast Asian, and Middle Eastern skin types where glutathione brightening is a well-established skincare priority, Super Glutathione 100 delivers this ingredient at a Japanese pharmaceutical quality standard.