The AHA 2 BHA 2 Blemish Treatment Serum
3% Kojic Acid Dark Spot Corrector Gel with Azelaic & Tranexamic Acid

COSRX

The AHA 2 BHA 2 Blemish Treatment Serum

The Derma Co

3% Kojic Acid Dark Spot Corrector Gel with Azelaic & Tranexamic Acid

A spot treatment built around AHA and Glycolic acid, for hydration and smoothing.

A spot treatment built around AHA and Glycolic acid, for barrier repair and hydration.

Spot treatment
Spot treatment
17 ingredients
39 ingredients

Brand price

USD 23.00 · checked 25 Sept 2026 · brand's site

Brand price

INR 499.00 · checked 28 Sept 2026 · brand's site

No retailer listed yet
No retailer listed yet
Brand from South Korea
Brand from India

At a Glance

They come out differently on Pore-clogger-free and Oil-free; those rows are shaded. Tap any answer to see why.

Key Ingredients

  • PHA1

    Polyhydroxy acids — larger and milder than AHAs.

    Gluconolactone

  • Zinc salt (sebum/soothing)1

    Zinc salts, used for sebum control and soothing.

    Zinc PCA

  • Polysorbates (Tween emulsifiers)1

    Polysorbate (Tween) emulsifiers.

    Polysorbate 20

  • AHA1

    Alpha hydroxy acids — water-soluble chemical exfoliants.

    Glycolic Acid

  • Fatty alcohol1

    Waxy fatty alcohols used as emollients and thickeners; unrelated to drying alcohol.

    Cetearyl Alcohol

  • Alpha arbutin1

    A gentler glycosylated relative of hydroquinone.

    Arbutin

  • Azelaic acid1

    Works on acne, redness and pigmentation at once.

    Azelaic Acid

  • AHA1

    Alpha hydroxy acids — water-soluble chemical exfoliants.

    Glycolic Acid

Benefits

Concerns

  • May Worsen Seborrheic Dermatitis1

    May feed the yeast involved in seborrheic dermatitis.

    Polysorbate 20

Ingredients Side-by-side

Show highlights for:

  • Water

    Skin Conditioning

  • Propanediol

    Viscosity Controlling

    0-1 / —

    • Hydrating

  • Polysorbate 20

    Cleansing

    0 / 0

    • Fatty esters (glyceryl stearate, PEG-100 stearate)
    • Polysorbates (Tween emulsifiers)
    • May Worsen Seborrheic Dermatitis

  • Glycolic Acid (in both products)

    Buffering

    0-1 / —

    • AHA
    • Glycolic acid
    • Anti-Aging
    • Brightening
    • Dark Spots
    • Exfoliating
    • Smoothing

  • Salicylic Acid

    Preservative

    • BHA
    • Salicylic acid
    • Acne Fighting
    • Exfoliating
    • Oil Control
    • Pore Refining

  • Gluconolactone

    Skin Conditioning

    • PHA
    • Exfoliating
    • Hydrating

  • Zinc PCA

    Humectant

    • Zinc salt (sebum/soothing)
    • Acne Fighting
    • Oil Control
    • Reduces Irritation

  • Allantoin

    Skin Conditioning

    0 / 0

    • Reduces Irritation
    • Smoothing

  • Sodium Hyaluronate (in both products)

    Humectant

    0 / 0

    • Hyaluronic acid
    • Hydrating

  • Sodium Hydroxide (in both products)

    Buffering

    0 / —

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Similar Comparisons

Each product against its closest dupes.