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    COSRX

    COSRX Refresh AHA BHA Vitamin C Booster Serum

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    A glycolic acid, BHA, and vitamin C booster that resurfaces texture and brightens tone.

    Our Asian beauty edit
    €22.0030ml · €73.33/100 ml · incl. VAT
    1

    In stock · dispatched in 1–2 working days

    In your routine

    CleanseToneTreatMoisturiseProtect
    Step
    2 · Weekly
    How often
    Up to 2 times a week
    Starting out
    Every other evening for two weeks, then nightly if comfortable. Not on a retinoid night. Daily SPF. Reactive skin: twice a week for the first month.

    • Glycolic AcidA water-soluble AHA that exfoliates the skin's surface to improve the look of texture and brighten dull, uneven-looking skin tone.
    • Betaine SalicylateA BHA-like derivative of salicylic acid that helps clear the look of congestion and refine the appearance of pores.
    • Ascorbyl GlucosideA stable, water-soluble form of vitamin C that supports brightening without the instability of pure L-ascorbic acid.
    • NiacinamideA vitamin B3 derivative that helps even the look of tone and support the skin barrier alongside the acids.

    After toning, apply an appropriate amount to face, gently patting until absorbed. Start with 1x weekly use at night, increasing to 2-3x weekly as tolerated. If used in the morning, always follow with SPF.

    Actinidia Chinensis (Kiwi) Fruit Extract, Hylocereus Undatus Fruit Extract, Hippophae Rhamnoides Water, Butylene Glycol, Niacinamide, 1, 2-Hexanediol, Glycolic Acid, Betaine, Sodium Hydroxide, Water, Panthenol, Allantoin, Hydroxyethylcellulose, Glycerin, Polyglyceryl-10 Myristate, Polyglyceryl-10 Laurate, Sodium Hyaluronate, Adenosine, Ascorbyl Glucoside, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Betaine Salicylate, Alpha-Arbutin, Menthyl Lactate, Mentha Haplocalix Extract

    A concentrated exfoliating booster serum that combines glycolic acid, betaine salicylate, and a stable vitamin C derivative with naturally sourced kiwi and dragon fruit extracts to refine texture and brighten the look of dull, uneven skin. Designed to be introduced gradually, it pairs well mixed into a moisturiser or used as a standalone targeted treatment.

    Key Benefits:

    • Glycolic acid (AHA) exfoliates to smooth the look of rough texture
    • Betaine salicylate (BHA) helps clear the look of congestion and pores
    • Ascorbyl glucoside brightens without the instability of pure vitamin C
    • Niacinamide supports a more even, balanced-looking tone
    • Best introduced 1-2x weekly, building up as tolerated

    Suitable for

    • acne-prone
    • photosensitising
    • do not combine with retinoid
    • not on broken skin
    • avoid on isotretinoin
    • not around eyes

    Highlights

    Radiance
    Blemishes
    Glycolic Acid
    Vitamin C
    Niacinamide

    Questions

    It's best matched to normal and combination and oily skin. A glycolic acid, BHA, and vitamin C booster that resurfaces texture and brightens tone.

    After toning, apply an appropriate amount to face, gently patting until absorbed. Start with 1x weekly use at night, increasing to 2-3x weekly as tolerated. If used in the morning, always follow with SPF. Best used in the evening.

    The key actives are glycolic acid (AHA), betaine salicylate (BHA), vitamin C (ascorbyl glucoside), niacinamide — chosen for exactly what this exfoliant promises: a glycolic acid, BHA, and vitamin C booster that resurfaces texture and brightens tone.

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