Checklists for choosing skincare by concern
For each concern, such as a toner for oily yet dehydrated skin, a checklist of ingredients, textures and tests to compare side by side. We never rank products.
11 articlesLast reviewed Oct 1, 2026
- AHA BHA in Your First 2 Weeks: Day-by-Day Plan and Stop SignsStarting AHA or BHA? A two-week weekday plan that moves from twice a week to every other day, what not to use the same night, and when stinging means stop.
- Cleansing Cream: When to Use It, by How Much Makeup You WearUse cleansing cream as step one on heavy-makeup days, then finish with a second wash. A chart pairs cleansers with everything from sunscreen to full makeup.
- Cleansing Oil: A 3-Minute Routine for Emulsifying and RinsingKorea's KDCA says oily, acne-prone skin should avoid cleansing oil. If you do use it, keep to 3 minutes: dry hands, brief massage, emulsify, rinse, second wash.
- Dehydrated Oily Skin: What to Layer After Toner, Zone by ZoneFor dehydrated oily, breakout-prone skin: how much to layer after toner by T-zone and U-zone, with summer and winter charts and a daily log for hidden dryness.
- Low pH Cleanser Switch: A 2-Week Log for Tightness and RednessSwitching to a low pH foaming cleanser? Log tightness, redness, stinging, and afternoon shine for 2 weeks, check the label pH, and know when to stop.
- Moisturizer After Washing Your Face: When, How Much, How OftenHow soon after washing to apply moisturizer, how much to use, and how often, based on studies and a Korean dermatology society, plus a chart by season.
- Acne Cream Trial: How to Log a New Cream Over the First 4 WeeksNew cream or serum for acne-prone skin? Try it behind the ear or inner arm, then one area, then your whole face, with stop signs and a weekly log.
- Sensitive Skin and a New Product: 7 Days From Arm Test to FaceWith sensitive skin, move a new product from inner arm or behind the ear to one face area, then your whole face, over 7 days. Log fast and late reactions.
- Soothing Ingredients by Situation: Red Days, Shaving, ExfoliationSoothing ingredients compared by situation: which forms and schedules panthenol, centella, and licorice were studied in for red days, shaving, and exfoliation.
- Mineral or Chemical Sunscreen: How Much, How Early, When to ReapplyMineral vs chemical sunscreen compared by amount, timing before going out, reapplying over makeup, and removal, with schedules for school, work, and workouts.
- Toner Pads: How Many Swipes, How Long to Leave On, How OftenHow to use toner pads: set your swipe count, how long a pad stays on your face, morning or night, and how often to use acid pads, with a day-by-day log.
