Sunscreen: the step that does more than all the others
Sunscreen is the last step of the morning routine and the most valuable thing in it. Apply generously, reapply on days you are genuinely outdoors, and choose a texture you will not resent — because the sunscreen you actually wear beats the one you own.
Why it outranks everything
A large share of visible facial ageing is attributed to sun exposure. No serum in your routine addresses a comparable share of the problem, which makes sunscreen the least negotiable step and the best value in skincare.
Apply enough
SPF is tested at a generous, standardised amount, and most people apply well under it. That gap matters more than the difference between SPF 30 and 50. Be more generous than feels natural.
Read both numbers
SPF covers UVB. The PA rating, used in Korea and Japan, covers UVA — the range associated with pigmentation and photoageing. Look for SPF 30 or higher with PA+++ or PA++++.
Reapplication
Every couple of hours of genuine sun exposure. A sun stick or cushion sunscreen handles reapplication over makeup by pressing rather than rubbing. A day spent indoors away from windows does not need the same discipline.
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🙋 People also ask
What is the 10-step Korean skincare routine?
The 10-step Korean skincare routine is a layered framework popularized in Korea: oil cleanser, water cleanser, exfoliant, toner, essence, serum or ampoule, sheet mask, eye cream, moisturizer and sunscreen. It's a customizable menu, not a daily mandate, and most people use only the steps their skin needs.
Why is Korean sunscreen considered better?
Korean sunscreens are often praised for elegant, lightweight textures that feel pleasant enough to wear daily, which encourages consistent use. They frequently use newer filters approved in Korea but not the US. Preferences are partly cosmetic; effectiveness depends on applying enough and reapplying regardless of brand.
Do you really need all 10 steps of Korean skincare?
No. The 10-step routine is a menu, not a requirement. Many Koreans use a simple core of cleanser, hydrating toner, moisturizer and sunscreen, adding serums, essences or masks only as their skin needs. The point is consistency and customization, not maximum steps.
Why is Korean sunscreen better?
Because Korea approves modern UV filters — Uvinul A Plus, Tinosorb S and M among them — that give strong UVA protection in light, non-greasy textures. Some markets, notably the US, have not approved them.
✍️ 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.