Skim everything else if you want, but read this part: sunscreen is the one step that matters most all summer. Korea's UV index sits in the very-high range for weeks, and it ages your skin whether or not you ever turn pink.
- Broad-spectrum, SPF 50+. You want UVA and UVB covered for a full day out.
- Use way more than you think. Two finger-lengths for face and neck. A polite little dab gives you a fraction of what the bottle promises — that's not me being dramatic, it's just how the testing works.
- Reapply every ~2 hours outdoors. Sweating buckets or jumping in a pool? Sooner.
- Carry a sunstick or sun cushion for touch-ups. You can pat it right over makeup without smearing your base into a mess.
Korean formulas are the ones that don't leave a chalky cast or sit greasy in humidity — that's why everyone hauls them. Picks by texture are in the best Korean sunscreens with no white cast.