How Retinol works 레티놀
Retinol converts in skin to retinoic acid, which binds nuclear retinoid receptors to influence gene expression — increasing cell turnover and supporting collagen-related activity, refining the look of lines, texture and pores over weeks to months. Typically 0.1–1%. PM only, introduce slowly, and use SPF the next day; avoid in pregnancy.
| Acts on | lines, texture & pore/blemish look |
|---|---|
| Evidence | Strong |
Retinol guide →Effective % & pH →
Related K-beauty guides
Try the free tools
🙋 People also ask
How long does Korean skincare take to work?
Most skincare, Korean or otherwise, needs time. Hydration benefits can appear quickly, but visible changes in tone, texture or fine lines typically take several weeks to a few months of consistent use, roughly one skin cycle or more. Sun protection and patience matter more than any single product.
Does Korean skincare work for deeper skin tones?
The skincare does — hydration, barrier support and soothing actives are not tone-specific. The friction points are mineral sunscreens that leave a cast and a colour-cosmetics shade range that has historically been narrow.
Can I use vitamin C and retinol together?
Not in the same layer, but easily in the same routine — vitamin C in the morning, retinol at night. That split suits both: vitamin C partners with sunscreen, and retinoids are degraded by light.
✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.