Exfoliation

When dead skin cells build up on the surface, skin can look rough or dull, so people exfoliate to smooth things out. Skin sheds dead cells naturally, though, so exfoliation is not an essential step for everyone. Overdoing it can weaken the skin barrier, which is why moderation matters more than frequency.

Physical exfoliation uses scrubs, peeling gels or textured pads to remove dead skin by rubbing. Chemical exfoliation uses acids such as AHA, BHA or PHA, or enzymes, to loosen the bonds between dead cells so they shed more easily. Either kind can irritate if overused, so choose based on how your skin responds.

AHAs, such as glycolic and lactic acid, are water-soluble acids mainly used to exfoliate the skin's surface. BHA, most commonly salicylic acid, is oil-soluble, so it often appears in products aimed at oil and pores. Both can cause irritation, so start with small amounts and lower frequencies.

PHA refers to ingredients such as gluconolactone. Because their molecules are larger, PHAs are often described as gentler exfoliants than AHAs, and they appear frequently in products for sensitive skin. Even so, some people may still react, so try a new PHA product on a small area before using it more widely.

It depends on your skin type and the strength of the product, but starting with about once or twice a week is a common recommendation. Some gentle products are designed for daily use, so follow the instructions. If you notice stinging, redness or tightness, space out your sessions or take a break.

Over-exfoliating can weaken the skin barrier, leading to stinging, redness, dryness and sometimes extra shine all at once, leaving skin more unstable than before. If this happens, stop exfoliating and switch to a gentle, moisturizing routine. If symptoms last, consult a dermatologist rather than adding new products.

Those white clumps that form when you rub a peeling gel are often largely the product's own ingredients balling up, not just dead skin. So seeing more of them does not mean more exfoliation is happening. Rubbing harder or longer to create more clumps can irritate your skin, so keep the motion gentle and brief.

Large or rough particles can cause tiny abrasions, so finer scrubs are a safer choice for the face. Use light pressure and keep it brief. Avoid areas with breakouts or sensitivity, and do not use body scrubs on your face, since they are usually much coarser than facial products.

Skin can be more sensitive after exfoliation, so finish with a generous layer of gentle moisturizer. Avoid stacking strong products such as retinol or other acids on the same day. The next morning, applying sunscreen carefully is especially important, since freshly exfoliated skin can be more vulnerable to the sun.

Some exfoliating ingredients, AHAs in particular, are known to make skin more sensitive to sunlight while you are using them. That makes daily sunscreen and regular reapplication especially important during any period when you use acid products. It is also worth reading the caution notes printed on the product packaging.

It can, but with extra care. Choose ingredients known to be gentler, such as PHA, or low-concentration products, and start with infrequent use. Stop immediately if your skin turns red or stings. If you have a diagnosed skin condition, check with a dermatologist before adding any exfoliating product to your routine.

It is not recommended. Using an exfoliating toner, pads, serum and scrub together can quickly build up irritation. Pick one exfoliating product and keep the rest of your routine focused on hydration and soothing. Check ingredient lists too, because acids can show up in products you might not expect.

Do not scrub with the pad. Instead, wipe lightly across your face following the natural direction of the skin. For pads containing acids, follow the recommended frequency rather than defaulting to daily use. Avoid thin areas around the eyes and mouth, and if you feel stinging, use them less often.

For rougher areas like elbows, knees and heels, people use body scrubs or body lotions with exfoliating ingredients. Moisturize well after showering. Korea also has a traditional body scrubbing culture at public bathhouses, but scrubbing too hard or too often can irritate the skin, so go easy.

At Korean public bathhouses, people scrub off dead skin using a rough exfoliating mitt often called an "Italy towel." You can do it yourself or use the bathhouse's scrubbing service. If your skin is sensitive, or you have cuts or a skin condition, it is best to skip it or ask for a gentler approach.

Visible flaking is often a sign of dryness, so try increasing moisturizing before reaching for an exfoliant. Picking or scrubbing flakes off can cause irritation. If flaking continues despite moisturizing, or comes with itching or red patches, consult a dermatologist, as it may be related to a skin condition.

Most people exfoliate in the evening. That way the skin is not exposed to sunlight right afterward, and you can follow with moisturizer while it recovers overnight. Some gentle products are made for morning use, so follow the instructions, and always wear sunscreen during the day.

Peels performed at medical clinics often use much stronger concentrations than cosmetics, which means both greater effects and a higher risk of side effects such as redness or pigment changes. Before considering one, confirm it is a licensed medical facility with a dermatologist, and discuss the risks and recovery process thoroughly.

Enzyme cleansers contain enzymes, often ones that break down proteins, to lightly exfoliate while you wash. Many come as powders that you mix with water to create a lather. They are generally considered gentle, but it is still wise to decide how often to use them based on your skin's reaction rather than automatically using them daily.

A brief, mild tingle can happen when you first use an acid product, but stinging that lasts or comes with strong redness or burning is not something to push through. Rinse the product off and stop using it. If symptoms continue, see a dermatologist rather than trying another exfoliant right away.