# COSRX AHA 7 Whitehead Power Liquid

AHA exfoliating liquid, 100 ml, with Glycolic Acid and Niacinamide.

- Brand: COSRX
- Product: AHA 7 Whitehead Power Liquid
- Price: $21.99
- Availability: Out of stock
- Size: 100ml
- Market: Korean market, the version sold in Korea
- Made in: Republic of Korea
- EAN (barcode): 8809416470047
- Category: Exfoliators

## Key benefits

- Apple fruit water, not plain water, is the first ingredient
- Glycolic acid, at the 7 percent named on the label, sits third on the list
- Niacinamide follows directly at fourth for tone
- Panthenol and sodium hyaluronate cushion the acid so the formula does not read as harsh
- Sodium hydroxide's only job here is pH balance, not activity

## How it works

An acid exfoliant works at the surface, loosening what is already on its way off so the skin underneath looks smoother and takes the next layer more evenly. This is the AHA in COSRX's line, a thin liquid rather than a cream, swept over dry skin with a cotton pad in the evening. It stands in for the toner step on the evenings you use it, and moisturizer goes over the top afterwards. Two or three evenings a week is a sensible ceiling, and sunscreen the following morning is part of using an acid at all. It suits skin that looks bumpy across the forehead and chin and is not already on a retinoid.

## How to use

1. Use the AHA 7 Whitehead Power Liquid in the evening, after cleansing, in place of your toner step.
2. Damp a cotton pad and sweep it over dry skin, keeping clear of the eyelids and the corners of the mouth.
3. Wait a minute, then carry on with a hydrating layer and your moisturizer the same evening.
4. Do not use it in the same routine as another exfoliating acid or a retinoid.

## Ingredients

Pyrus Malus (Apple) Fruit Water, Butylene Glycol, Glycolic Acid, Niacinamide, Sodium Hydroxide, 1,2-Hexanediol, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol

## FAQ

### How strong is the glycolic acid in this liquid exfoliant?

Glycolic acid sits third on the ingredient list, after the apple fruit water base and butylene glycol, with no percentage declared on the label. That early position on the list is the only strength signal available; without a declared number, the exact percentage cannot be stated, so starting with limited frequency is the safer approach.

### Is this exfoliant suitable for sensitive skin?

Glycolic acid is an AHA and can be more irritating on sensitive or reactive skin than a BHA formula, though niacinamide, panthenol and sodium hyaluronate further down the list are included to support comfort. Anyone new to AHA exfoliants should start with limited frequency and watch how the skin responds.

### Does this product contain niacinamide alongside the acid?

Yes, niacinamide sits fourth on the list, right behind the glycolic acid and ahead of sodium hyaluronate and panthenol. Pairing a brightening-support ingredient with an AHA is a common formulation choice in Korean liquid exfoliants, and applying it as a leave-on step after cleansing gives both ingredients time to work before the next layer goes on.

### What does 'Whitehead Power' mean for how this product is used?

The naming points to surface texture and visible whiteheads as the target, which is the classic use case for an AHA like glycolic acid: it works on the skin's surface to loosen the bonds between dead cells rather than reaching inside a clogged pore the way a BHA does.

### Can this be layered with a moisturizer right after use?

Yes, sodium hyaluronate and xanthan gum sit near the end of the list to support the skin's moisture level after the acid step, and following with a moisturizer is standard practice after any leave-on exfoliating liquid.

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Page: https://korean-pharmacy.com/products/cosrx-aha-7-whitehead-power-liquid