The AHA BHA PHA LHA 35 Peel — Reddit Reviews
by COSRX
Updated October 3, 2026
A weekly at-home peel for smoother, clearer pores; pretty brutal.
What the community says
A wash-off acid peel that Redditors use once a week for 10 minutes, mostly for smoother texture and smaller-looking pores. Studies back the acne and exfoliation angle, but the community keeps calling it very strong, so sensitive skin gets burned easily.
What this means for you
What people love
Watch out for
Product details
Concerns
Product Traits
Key Ingredients
Skin type data limited
Where to buy
What the science says
Acne
Some evidence
Salicylic Acid: 16 studies tested it on its own. See all 34 studies
Both ingredients for acne
Salicylic Acid Some evidence
- Most studies found salicylic acid helped clear acne
- It often improved pimples, blackheads and whiteheads
- It usually worked about as well as other common acne treatments
- Used together with other treatments, it sometimes cleared acne better than those treatments alone
- Results were mixed in some studies, and one large review found low-quality evidence
Studied at 0.5–30%this product: 2%
Glycolic Acid Some evidence
13 studies tested it on its own. See all 22 studies
Hyperpigmentation
Some evidence
Glycolic Acid: 15 studies tested it on its own. See all 26 studies
What the studies found
- Most studies found glycolic acid helped fade dark spots or patches
- It often worked better when used with other treatments than those treatments alone
- Used on its own, it also faded dark patches in many people
- It usually worked about as well as several other peel treatments, retinol, and tretinoin peels
- Side effects were reported with glycolic acid peels, though details were not given here
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 7 mentions across 7 threads
COSRX The AHA BHA PHA LHA 35 Peel on Reddit, in one place — 7 threads from r/AsianBeauty and r/koreanskincare, summarized.
“If you are not sensitive, the Cosrx AHA BHA PHA LHA 35 peel is elite.”
Positive
“Think of it as a light at home chemical peel.”
Positive
“My pores appear much smaller and my skin is clearer and glowier.”
Positive
“The Cosrx AHA BHA LHA PHA 35 Peel.”
Positive
“It is STRONG but it has reduced my pores and made my skin glow more than any other product I’ve tried.”
Positive
“I use it once a week for 10 minutes, then rinse it off.”
Positive
“the Cosrx AHA BHA PHA LHA 35 peel”
Positive
“For products, prescription tazarotene, azelaic acid, and oral spironolactone and the Cosrx AHA BHA PHA LHA 35 peel.”
Positive
“Cosrx AHA BHA PHA LHA 35 peel”
Positive
“Have you tried the Cosrx AHA BHA PHA LHA 35 peel?”
Positive
“I really like it”
Positive
“Have you used it?”
Positive
“Cosrx AHA BHA PHA LHA 35 Peel (27.98% AHA, 2% BHA, 5% PHA, and 0.02% LHA/30ml): I like this product!”
Positive
“Used once a week, I feel like my skin does feel smoother...but I still get acne so idk haha.”
Positive
“Second mention of the cosrx 23 serum being great in this thread!”
Positive
“Cosrx AHA BHA PHA LHA 35 Peel”
Positive
“It makes a massive difference in my pores and my skin is so much clearer”
Positive
“It’s very strong so I only use it once a week”
Positive
Dupes & Alternatives
Paula's Choice
Skin Perfecting 2% BHA Liquid Exfoliant
Better for Texture / Pores
4 shared traits
835 mentions
