Korean tips

Swap out your sunscreen.

Dryness, redness, and tight skin are signs that you may need to switch to a higher SPF. Try a new sunscreen and see if the issues go away in a few days. —Sadick

Don't towel off.

If your skin is ashy, make one easy change: Don't dry it completely before moisturizing. Creams seal in hydration and work best with a little water. —Hirsch

Peel pads are almost too easy not to use.

Glycolic acid treats lines and dark spots. It's most effective in individually wrapped peel pads (the pH of glycolic acid can change when it’s exposed to air). —Wu

Pack an extra pillow for puffy eyes.

If you wake up to puffy eyes, add an extra pillow under your head while you sleep — gravity drains enough fluid to help with next-day puffiness. —Zeichner

Apply sunscreen — everywhere.

Don't forget sunscreen on your ears, hairline, neck, hands, and chest. Dermatologists can look at your décolleté to see how old you are. —Ranella Hirsch

Integrate fatty acids into your routine.

Your skin uses omega fatty acids to produce lipids (moisturizing oils) and studies show that omega-3 supplements improve skin's lipid levels and hydration. —Wu

Blackheads hate salicylic acid.

Salicylic acid is really only ideal for blackheads and whiteheads. If it dries you out, look for it in a face wash and let it sit on your skin for 30 seconds. —Zeichner

Acne products come in many formulas.

Benzoyl peroxide kills P. acnes bacteria; use it all over to prevent breakouts. A 2.5 or 5.5 percent formula works without flaky side effects. —William James

Be patient when using retinol.

Using retinol is a marathon, not a sprint. It stimulates collagen but can irritate. Start using it once per week, over a moisturizer. —Joshua Zeichner

Self-care with a sheet mask.

Sheet masks push hydrating ingredients into the skin. Put one on over your moisturizer for 10 minutes at night, and your skin will be dewy the next day. —Day

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