Vitamin

Methylmethionine (Vitamin U)

Supports skin renewal for smoother-looking skin and wrinkle improvement. Vitamin U is a sulfur-containing amino acid derived from cruciferous vegetables such as cabbage and broccoli, used across the CUSKIN Vitamin U range to support the skin's natural renewal for smoother-looking skin. CUSKIN's dermatological research into how it behaves on the skin barrier led to a cosmetic patent for Vitamin U as a wrinkle-care active. (Korean Patent No. 10-1202006).

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Benefits

checkSkin barrier support — helps reinforce skin that feels compromised after procedures, sun exposure or over-exfoliation
checkPost-sun and redness care — helps calm the look of visible redness and irritation
checkVisible wrinkle improvement — supports the skin's natural renewal so lines and texture look smoother over time
checkSuits sensitive and reactive skin — a gentle active that layers with the rest of a routine rather than replacing it

Things to know

infoMay cause mild irritation on very sensitive or compromised skin — patch test on the inner arm before first use
infoIntroduce one new active at a time so you can tell what your skin is responding to
infoResults build gradually — most people look for changes over 8 to 12 weeks of consistent use rather than days
infoStore away from direct sunlight and heat, and close the cap fully after each use