K-Beauty › Library › Routines by age

Dullness & glow in your 20s: the Korean approach

⏱ 1 min read
⚡ Quick answer: Dullness & glow in your 20s: The prevention decade. Skin still recovers quickly, which makes it the cheapest possible time to build sunscreen and barrier habits. The Korean approach leans on Vitamin C, AHA (Glycolic/Lactic), Niacinamide (B3), introduced one at a time and always finished with daily sunscreen.

Dullness & glow in your 20s: The prevention decade. Skin still recovers quickly, which makes it the cheapest possible time to build sunscreen and barrier habits. The Korean approach leans on Vitamin C, AHA (Glycolic/Lactic), Niacinamide (B3), introduced one at a time and always finished with daily sunscreen.

What is different about this stage

The prevention decade. Skin still recovers quickly, which makes it the cheapest possible time to build sunscreen and barrier habits.

What dullness & glow looks like here

Tired, flat, uneven, lacklustre skin.

Ingredients to lean on

🍊 Vitamin C🍋 AHA (Glycolic/Lactic)🧫 Niacinamide (B3)🫚 Ginseng🍶 Galactomyces Ferment
⚠️ Be careful with: Build-up from skipping exfoliation
💡 Tip: Gentle exfoliation + vitamin C + hydration = the “glass skin” glow.

🎯 Full dullness & glow guide →🏆 Ranked ingredients →

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 → ⏭ Up next🌱 Sun damage & photoageing in your 20s: the Korean approach
💄 K-Beauty hub📚 All guides🎤 K-Pop🧭 Korea travel

✍️ 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.