Refresh AHA/BHA Vitamin C Booster Serum

COSRX Refresh AHA/BHA Vitamin C Booster Serum is a daily serum that exfoliates lightly rather than aggressively. COSRX builds the brightening side on kiwi and dragon fruit extract and pairs it with 2% niacinamide plus AHA and BHA — so it sweeps away dead surface cells while evening out tone. The texture is watery and sinks in fast.

What it actually does

• Gentle daily peeling. COSRX positions this as a serum you can use regularly, not a once-a-week acid session.
• Targets dullness and rough texture. The brand names dull skin, a rough surface and excess oil as what it is built for.
• 2% niacinamide with AHA/BHA. COSRX credits that pairing with exfoliating and brightening overall tone.
• Fruit-derived brightening. The exfoliating agents come from juicy kiwi and dragon fruit skin rather than a harsh synthetic blend.
• Light, absorbent finish. Watery and quick to soak in, which is why COSRX calls it suitable for combination through to oily skin.

How to use

1. Apply after your toner. Cleanse, tone, then this.
2. Pat it in lightly rather than rubbing — it absorbs on its own.
3. Follow with moisturiser. Exfoliating serums are easier on the skin when sealed.
4. Always wear SPF in the daytime. COSRX flags this specifically, and with AHA/BHA in the formula it is not optional.

Is it right for you?

Questions

Can I really use it every day?

COSRX designs it as a daily booster. That said, start every other evening and build up — exfoliating acids reward patience, and your skin will tell you quickly if daily is too much.

Morning or night?

Either, as long as daytime use is followed by sunscreen. Many people find evening simpler for anything with AHA or BHA in it.

Will it help with oiliness?

Excess oil is one of the concerns COSRX lists for it, and the light finish means it will not add to the problem.

How soon will it arrive and how do I pay?

Delivery runs 3 to 21 working days, depending on availability. Payment is by credit card, debit card, Instapay or mobile wallets; cash on delivery is not offered.

What if the bottle is damaged or past date?

Tell us within 1 day of delivery. Defective, damaged or expired items are the only cases we accept, and verified refunds reach your original payment method within 15–30 days.