About this product
COSRX Refresh AHA BHA Vitamin C Booster Serum 30ml combines gentle AHA, BHA, and vitamin C in a concentrated booster to exfoliate dead skin, unclog pores, and brighten uneven skin tone simultaneously. Apply before moisturiser 2-3 times weekly for smoother texture and a more radiant complexion.
Best for combination, oily, dull skin looking to address dullness, hyperpigmentation, texture — with a focus on exfoliate + brighten.
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Quick Stats
Key Ingredients
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Product Claims
Common Allergens
Based on confirmed product attributes. Always check the full ingredient list for personal allergens.
Always check the full ingredient list if you have known allergies or sensitivities.
How to Use
- 1Apply to clean, dry skin
- 2Follow with hydrating toner
- 3Can use 3-5 times weekly
Patch Test Recommended
This product contains high-strength actives. Before full application, apply a small amount to your inner arm or jaw and wait 24 hours to check for irritation.
If you experience redness, burning, or itching — discontinue use and consult a dermatologist.
Dermatologist Note
28.5% kiwi + dragon fruit + glycolic acid for exfoliation and brightening action.
Based on published clinical literature and dermatological research.
Ingredient Analysis
Full Ingredient List (INCI)
4 ingredientsListed in order of concentration (highest first)
Glycolic Acid (AHA), Betaine Salicylate (BHA), Ascorbyl Glucoside, Niacinamide
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Disclaimer: The information on this page is for informational purposes only and does not constitute medical or dermatological advice. Always do your own research, consult a qualified professional if you have concerns, and patch test new products before full application — especially if you have sensitive or reactive skin.