Actives
BHA
also known as Salicylic acid
An oil-soluble exfoliant that gets inside pores — for blackheads, congestion, and texture that won't smooth out.
What it actually does
Salicylic acid is the only common exfoliant that's oil-soluble, which means it can travel inside an oily pore and dissolve the gunk lodged there. It also dampens inflammation, which is why it's a workhorse for active acne, not just blackheads. Korean formulas often use betaine salicylate (a gentler derivative) at higher concentrations than the 2% you see in Western SKUs.
Who it's for
Oily, congested, or blemish-prone skin. Avoid if you're using prescription retinoids — the combination is too much for most barriers.
How to use it
Two to four nights a week to start, then build up. Always follow with moisturizer, and SPF the next morning is non-negotiable. Don't stack with AHAs the same night.
Products with bha
6 productsAnua
Bha 2 Gentle Exfoliating Toner

APLB
Aha Bha Pha Centella Ampoule Serum

APLB
Aha Bha Pha Centella Facial Cream

APLB
Aha Bha Pha Centella Facial Toner

APLB
Aha Bha Pha Centella Mist Essence
APLB
Salicylic Acid Bha Arbutin Ampoule Serum
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Related ingredients
Retinal
Activesaka Retinaldehyde, retinol
The fastest-acting OTC retinoid — smooths lines, evens tone, and unclogs pores with less irritation than retinol.
Niacinamide
Brighteningaka Vitamin B3
The all-rounder — evens tone, calms redness, and tightens the look of pores without irritation.
Centella asiatica
Soothingaka Cica, tiger grass
The K-Beauty soothing standard — calms redness, speeds barrier recovery, and quiets reactive skin.