Retinaldehyde (Retinal): K-beauty ingredient guide 레티날
⏱ 1 min read
⚡ Quick answer: The middle rung of the retinoid ladder. Because it needs fewer conversion steps than retinol, it is generally considered more potent at the same percentage — start low, go slow, and always pair it with sunscreen the next morning. Retinoids are also the one category conventionally avoided altogether in pregnancy and breastfeeding: here, 'caution' means skip it until after.
The middle rung of the retinoid ladder. Because it needs fewer conversion steps than retinol, it is generally considered more potent at the same percentage — start low, go slow, and always pair it with sunscreen the next morning. Retinoids are also the one category conventionally avoided altogether in pregnancy and breastfeeding: here, 'caution' means skip it until after.
What Retinaldehyde (Retinal) does for your skin
- One conversion step closer to retinoic acid than retinol
- Often described as working faster than retinol at similar tolerance
Best for
🌌 Retinaldehyde (Retinal) compatibility map
Tap any ingredient to open its guide. ━ pairs well · ┈ use with care.
⚠️ Be careful pairing with: AHA (Glycolic/Lactic), BHA (Salicylic), PHA (Gluconolactone), Vitamin C, Mandelic Acid, Lactic Acid — introduce gradually or alternate nights.
🤰 Pregnancy: Ask your doctor before use during pregnancy. · ⏰ Use: PM
Related K-beauty guides
Try the free tools
🪞 Find your skin type🧴 Build a routine🧪 Decode any INCI list⚗️ What not to mix🔮 Glass Skin Score🩺 Troubleshoot skin🛡️ Where to buy authentic
Explore more K-beauty guides →
Related
🐌 Snail Mucin🌿 Centella (Cica)🧫 Niacinamide (B3)🍯 Propolis🍵 Mugwort (Artemisia)🌱 Heartleaf (Houttuynia)✍️ 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.