Ranked by 6 mentions across Reddit
The why
Redditors use it as a mild leave-on exfoliant for blackheads, clogged pores, and rough texture. Studies found niacinamide can help acne, while community reports say this one is usually gentler than harsher BHAs. Overuse can sting, dry out, or set off redness.
One minus
Overuse can sting, redden, and wreck the barrier
Good forCombination Skin, Oily Skin, Sensitive Skin
Studies found glycolic acid helps acne; Redditors report overnight whitehead wins, with irritation.
COSRX1 mention
Skin Perfecting 2% BHA Liquid Exfoliant
Salicylic acid BHA clears clogged pores; studies back acne benefits.
Paula's Choice1 mention
For combination skin, Redditors most often recommend COSRX BHA liquids for congestion and clogged pores, with some also using Paula’s Choice BHA. AHA 7 gets a mention as a spot treatment when pimples start forming.
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