COSRX - AHA 7 Whitehead Power Liquid (100ml)

COSRX AHA 7 Whitehead Power Liquid is a 7% glycolic acid exfoliant — a genuinely effective treatment for texture and tone, and one whose name points at the wrong problem.

AHA 7 Whitehead Power Liquid at a glance

About that name

Whiteheads are closed comedones — pores plugged with oil and dead skin under an intact surface. Glycolic acid is water-soluble, which means it works on the skin surface and does not travel far into an oil-filled pore. The ingredient better suited to that specific job is salicylic acid, a BHA, which is oil-soluble and gets inside the pore.

So if you are buying this specifically to clear whiteheads, a BHA product is the more direct choice — the salicylic acid cleanser or a leave-on BHA would target them better. That is not a knock on this product; it is a naming problem.

What 7% glycolic actually delivers is worth having. It loosens the bonds between dead surface cells, which over a few weeks gives smoother texture, a brighter and more even-looking tone, and better absorption of whatever you apply afterwards. It has one of the longest and strongest evidence bases in skincare. Used consistently, it does a lot of what people hope a whole shelf of products will do.

Two rules make the difference between results and irritation: start slowly, and wear sunscreen. Exfoliating acids make skin measurably more sun-sensitive, and skipping SPF undoes the tone improvement you are working for.

How to use it

1. Start twice a week, at night, on completely dry skin after cleansing.
2. Apply a thin layer with hands or a cotton pad, avoiding the eye area and any broken skin.
3. Wait a few minutes, then follow with moisturiser.
4. Build up gradually to every other night if your skin tolerates it — more often is not better.
5. Wear sunscreen every morning, without exception, while using it.

Browse the full COSRX range at EmartGCC.

Frequently asked questions

Will it clear my whiteheads?

Less well than the name suggests. Whiteheads are plugged pores, and glycolic acid is water-soluble so it works mainly on the surface. A salicylic acid (BHA) product is better suited to closed comedones.

Is this the same as the AHA/BHA Clarifying Treatment Toner?

No, and the difference is large. This is a 7% leave-on treatment used a few nights a week. The AHA/BHA toner is a gentle daily toner with far lower acid content and is not a substitute for this.

Do I really need sunscreen with it?

Yes. AHAs increase sun sensitivity, and the tone improvement you gain will be undone by unprotected sun exposure. This is the single most important rule when using acids.

Can I use it with retinol?

Not on the same night, for most people. Alternate them — acid one night, retinoid another. Layering both is the fastest way to a compromised barrier.

My skin stings when I apply it. Is that normal?

A brief mild tingle is common. Genuine stinging, burning or lasting redness means it is too much — reduce frequency, or stop if the skin is already irritated or broken.

How long until I see results?

Texture and brightness usually improve within two to four weeks of consistent use. Tone evenness takes longer, typically two to three months.

Can I use it on my body?

Yes, glycolic acid works the same way on rough areas like upper arms. Body skin is generally more tolerant, but the sunscreen rule still applies to exposed areas.

Buying COSRX in Kuwait

EmartGCC supplies 100% original COSRX with free standard home delivery across Kuwait, usually next day. Areas beyond Fahaheel and Jahra carry a 3 KD delivery surcharge. Cash on delivery is available, and unopened items can be returned within 14 days.