Product benefits

Early Wrinkle & Brightness Boost

Vitamin U Ampoule Toner brings patented Vitamin U, Syn-Ake, and Volufiline right after cleansing, softly smoothing early lines and adding subtle radiance—lovely for optimizing skin gently from the very first layering step.

Sealed-In Glow & Comfort

Vitamin U Cream locks everything in with Vitamin U, niacinamide, adenosine, and ceramide, quietly evening tone and softening wrinkles—leaving your skin plump, protected, and softly glowing at the end of the routine.

Firmer, More Radiant Resilience

Vitamin U Serum delivers concentrated Vitamin U with niacinamide, EGF, and Volufiline to brighten dullness and restore bounce, helping tired or dehydrated skin feel nourished and energized through daily stressors.

Brand: CUSKIN

Discover CUSKIN: Clinic-Born Korean Cosmeceuticals for Real, Lasting Skin Health

Professional Dermatology Meets Everyday Luxury Founded by dermatologists. Since 2001, CUSKIN has been rooted in a trusted network of specialist clinics treating over 300,000 patients annually.

Our philosophy: “Skin Function Restoration” — healthy, resilient skin that glows from within, not just temporary perfection. We combine natural sources and pharmaceutical-grade actives for sustainable results you can feel.

The Ultimate Synergy Effect Real patient feedback from our clinics flows directly into our in-house R&D center and CGMP-certified factory. This closed-loop system — clinics → analysis → innovation → products — ensures every formula solves actual skin concerns with proven efficacy.

Our Specialized Lines: Targeted Care for Every Skin Journey

CLEAN-UP Your gentle daily foundation for clear, balanced skin. Ideal for sensitive, acne-prone, oily, or combination types. Low-irritation essentials purify without stripping, calm redness, control sebum, and refine pores.

CU Dr. Solution Barrier repair and deep hydration heroes for damaged, dehydrated, or sensitive skin. Powered by probiotics (Bifida Ferment), PDRN (salmon DNA), ceramides, niacinamide, and hyaluronic acid. Soothe irritation, boost elasticity, and lock in moisture with bestsellers like Bifida Barrier Ampoule and Cicaming Lotion — perfect for post-treatment recovery or everyday resilience.

CU: Vitamin U Intensive anti-aging programs featuring our exclusive patented Vitamin U (Methylmethionine Sulfonium). Clinically proven to accelerate healing, reduce wrinkles, firm skin, and protect against damage..

All formulas are clean, conscious, and rigorously tested — vegan-certified (Korea & Italy), natural organic approved, no harsh additives.

Backed by Science & Global Trust

  • In-house R&D since 2006 → Collaborations with Seoul National University & Yonsei University, SCI-level publications.
  • State-of-the-art CGMP & ISO 22716 facility for premium quality.
  • 20+ years of innovation.

Join tens of thousands of K-Beauty lovers worldwide who choose CUSKIN for clinic-proven, gentle-yet-powerful results.