Questions about COSRX AHA 7 Power Liquid (HC Version) 100ml

Got questions? We’ve got answers!

1. How often should I use it?

Start once a week and build up to two or three times a week. This is a 7% glycolic acid product, not a daily toner.

2. Do I need sunscreen with it?

Yes, and this is not optional. AHAs increase sun sensitivity. Wear a broad spectrum SPF 30 or higher every morning while using this product and for a week after stopping.

3. Can I use it with my retinol or vitamin C?

Not in the same routine. Alternate them on different nights instead of layering, or you will likely end up irritated.

4. Will it sting?

A brief tingle on application is common with an acid at this strength. Persistent stinging, burning or redness means you should stop and give your skin a break.

5. What is the difference between this and the BHA Blackhead Power Liquid?

AHAs work on the surface of the skin and suit rough texture and dullness. BHAs are oil soluble and get into the pore, which suits congestion and blackheads.

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