Frequently asked questions

A brightening cleanser is a face wash that cleans skin while adding ingredients aimed at a more radiant, even-looking tone, usually gentle exfoliating acids (AHAs, BHAs or PHAs), enzymes, or antioxidants such as vitamin C. By loosening dull surface cells, it helps skin look fresher and helps the products you apply next spread evenly.

A good one leaves skin clean but not tight. It's a supporting step: leave-on serums and sunscreen do most of the work on dark spots.

A brightening face wash works mainly through exfoliation, not through the vitamin C it contains. A cleanser stays on skin for under a minute, which is enough for exfoliating acids and enzymes to loosen dull surface cells, while most antioxidants rinse away.

To get the most from it, massage it onto damp skin for 30 to 60 seconds before rinsing. Expect smoother, fresher-looking skin within a couple of weeks, and pair it with a leave-on vitamin C serum and sunscreen for dark spots.

A clarifying cleanser is a face wash designed to unclog pores and remove excess oil, sweat and buildup, usually with salicylic acid (a BHA), other gentle acids, clay or charcoal. It suits oily, combination and breakout-prone skin.

The difference from a brightening cleanser is focus: clarifying targets pores and oil, while brightening targets dullness and uneven tone, though many formulas do both. If your skin feels tight or squeaky after washing, use it once a day instead of twice.

Double cleansing means washing your face twice at night: first with an oil or balm cleanser to dissolve sunscreen, makeup and oil, then with a water-based cleanser to clean the skin itself. It's most useful if you wear water-resistant sunscreen or long-wear makeup.

If you wear neither, one gentle cleanse is enough. Keep the second cleanse mild and skip scrubbing, since over-cleansing can dry and irritate skin prone to dark spots.

Salicylic acid is a beta hydroxy acid (BHA) that dissolves in oil, so in a cleanser it can get into pores to loosen dead cells and sebum. Typically used at 0.5 to 2%, it helps keep pores clear, reduces blackheads and helps prevent the breakouts that leave dark marks.

Because it stays on for only 30 to 60 seconds, a wash is gentler than a leave-on BHA. It can still dry skin, so start once a day and moisturize afterward.

A PHA (polyhydroxy acid) is a gentle chemical exfoliant, such as gluconolactone or lactobionic acid, that loosens dead surface cells like AHAs do, but with larger molecules that penetrate more slowly. That means less stinging and irritation, which makes PHAs a good fit for sensitive, dry or hyperpigmentation-prone skin.

PHAs also attract water, so they support hydration. They work more gradually than glycolic acid, so give them 4 to 8 weeks of regular use.

Enzyme exfoliation uses fruit enzymes, most often papain from papaya (paw paw), bromelain from pineapple or enzymes from pumpkin, to break down the proteins that hold dead surface cells together. It works without acids or scrubbing, so it's one of the gentlest ways to smooth and brighten dull skin.

You'll find enzymes in cleansers, powders and masks. People allergic to papaya, pineapple or latex should avoid them, and everyone should patch test first.

You're likely over-exfoliating if your skin stings with products that used to feel fine, looks shiny but feels tight, turns red, flakes, or breaks out in small bumps. On melanin-rich skin, over-exfoliation can also leave new dark patches.

Stop all acids, scrubs, retinoids and peels for 1 to 2 weeks and use only a gentle cleanser, moisturizer and sunscreen. Then bring back one exfoliant, 2 to 3 times a week at most.

Harsh face scrubs can make hyperpigmentation worse. Gritty particles like crushed shells, sugar or salt create tiny tears and friction, and on melanin-rich skin that irritation often triggers new dark marks.

If you like physical exfoliation, choose a fine, smooth-bead scrub or a soft washcloth, use light pressure, and limit it to once or twice a week. For dark spots, gentle chemical exfoliants such as lactic acid or PHAs are the safer choice.

No, toner is optional. Modern cleansers don't leave skin at the high pH old soaps did, so most people don't need a toner to rebalance it. A toner can still be a light way to add hydration, gentle exfoliation or antioxidants: hydrating toners suit dry skin, exfoliating toners suit oily skin.

Skip alcohol-heavy astringents, which dry and irritate. If your routine already has a serum and moisturizer, you can leave toner out.

To patch test a new skincare product, apply a small amount to the inside of your forearm or behind your ear once or twice a day for 3 to 5 days, and watch for redness, itching, stinging, bumps or swelling. For face products, then try a small area along the jawline for a few days.

If you react, wash it off and stop using it. A patch test can't rule out every reaction, but it catches most irritation and allergies early.

"Dermatologist tested" means a dermatologist supervised or assessed a test of the product on human skin, most often a patch test for irritation and allergy, such as a repeat insult patch test (HRIPT). In an HRIPT, about 50 or more volunteers wear the product under a patch repeatedly over about 6 weeks, and any skin reactions are graded.

It shows a product is unlikely to irritate most people. It doesn't mean the product works, is endorsed by dermatologists or suits everyone.

Non-comedogenic means a product is formulated not to clog pores or cause comedones (blackheads and whiteheads). The term isn't regulated in the US, and testing ranges from ingredient screening to human use studies.

It's a helpful guide for oily and breakout-prone skin, but reactions differ, so a non-comedogenic product can still break some people out. Watch your skin for 4 to 6 weeks when you try something new.

Fragrance-free means no fragrance ingredients, synthetic or natural, have been added to give the product a scent. Unscented usually means the product has no noticeable smell, but it may contain a masking fragrance to cover the smell of other ingredients, so it can still irritate.

Neither term is strictly regulated in the US. For sensitive skin, choose fragrance-free and check the list for "parfum", "fragrance" and essential oils such as lavender or citrus.

For most routines, wait 30 to 60 seconds between skincare steps, just long enough for each layer to feel mostly absorbed. Longer waits aren't needed with modern formulas.

A few exceptions: if a low-pH vitamin C or acid tingles, give it 1 to 2 minutes before the next layer; let sunscreen set for about 15 minutes before sun exposure; and wait a minute or two before makeup to avoid pilling.