Paula's Choice BHA 9 Treatment vs COSRX AHA 7 Whitehead Power Liquid

Paula's Choice

COSRX

A chemical exfoliant built around BHA and Salicylic acid, for hydration and barrier repair.

A chemical exfoliant built around AHA and Glycolic acid, for hydration and barrier repair.

Chemical exfoliant

12 ingredients

10 ingredients

Brand price

USD 45.00 · checked 8 Oct 2026 · brand's site

Brand price

USD 22.00 · checked 25 Sept 2026 · brand's site

No retailer listed yet

Brand country not recorded

Brand from South Korea

At a Glance

They come out differently on Fungal-acne-safe and Vegan; those rows are shaded. Tap any answer to see why.

Colloidal oatmeal1
Finely milled oat — an FDA-recognised skin protectant.
Avena Sativa Kernel Extract
Polysorbates (Tween emulsifiers)1
Polysorbate (Tween) emulsifiers.
Polysorbate 20
BHA1
Beta hydroxy acid — oil-soluble, so it works inside the pore.
Salicylic Acid
Salicylic acid1
The BHA used in acne treatment.
Salicylic Acid

Panthenol (provitamin B5)1
Provitamin B5 — a humectant and soother.
Panthenol
AHA1
Alpha hydroxy acids — water-soluble chemical exfoliants.
Glycolic Acid
Glycolic acid1
The smallest AHA, and so the most penetrating.
Glycolic Acid
Hyaluronic acid1
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Sodium Hyaluronate

Hydrating4
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Glycerin, PEG-8, Propylene Glycol
Barrier Repair4
Strengthens and restores the skin's natural barrier.
Avena Sativa Kernel Extract, Boerhavia Diffusa Root Extract, Glycerin, Propylene Glycol
Reduces Irritation1
Eases discomfort and supports skin resilience.
Avena Sativa Kernel Extract
Smoothing2
Refines rough or uneven texture.
Avena Sativa Kernel Extract, Salicylic Acid

Hydrating3
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Panthenol, Sodium Hyaluronate
Barrier Repair2
Strengthens and restores the skin's natural barrier.
Niacinamide, Panthenol
Reduces Irritation1
Eases discomfort and supports skin resilience.
Panthenol
Redness Reducing1
Soothes visible redness and calms irritation.
Niacinamide

May Worsen Seborrheic Dermatitis2
May feed the yeast involved in seborrheic dermatitis.
PEG-75 Stearate, Polysorbate 20

No concerns found

Show highlights for:

Propylene Glycol
Humectant
0 / 0
PEG-75 Stearate
Cleansing
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- May Worsen Seborrheic Dermatitis
PEG-8
Humectant
Water
Skin Conditioning
Salicylic Acid
Preservative
- BHA
- Salicylic acid
- Acne Fighting
- Exfoliating
- Oil Control
- Pore Refining
Glycerin
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Avena Sativa Kernel Extract
Emollient
- Colloidal oatmeal
- Barrier Repair
- Reduces Irritation
Butylene Glycol (in both products)
Humectant
1 / 0
- Hydrating
Boerhavia Diffusa Root Extract
Skin Protecting
Arginine
Skin Conditioning
0 / —

These ingredients are found in both products.

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

Butylene Glycol
Fragrance, Humectant, Skin Conditioning, Solvent, Viscosity Controlling
Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)
Learn more about Butylene Glycol →

Each product against its closest dupes.