
Effaclar Salicylic Acid Acne Treatment Serum — Reddit Reviews
Updated October 21, 2026
Studies support salicylic acid for acne; Redditors report clearer pores and stinging.
What the community says
This leave-on blend pairs 1.5% salicylic acid with glycolic acid for oily, congested skin and recurring bumps. Redditors report clearer skin, and studies support salicylic acid for acne; the acid load can make sensitive skin sting.
What this means for you
Backed by 6 threads from r/30PlusSkinCare, r/SkincareAddiction and 1 more.
Read the threads ↓What people love
- 1.5% salicylic acid leave-on for bumps and blackheads
- Glycolic acid targets acne and comedones alongside salicylic acid
Watch out for
- Stings when used too often; start weekly
- Too much alongside tretinoin, dapsone, azelaic acid, or pore pads
Product details
Concerns
Use caution
Key Ingredients
Where to buy
What the science says vs. what Reddit says
Anti-Aging
Strong evidence
Glycolic Acid: 14 studies tested it on its own. See all 21 studies
What the studies found
- Most studies found glycolic acid helped with signs of aging
- It often improved fine lines, rough skin, and overall skin texture
- Some studies found it helped fade dark spots and improve skin clarity
- Results were less clear for some wrinkle changes, and one study found it worked less well than tretinoin
- The most common side effects were stinging and burning
Acne
Some evidence
Salicylic Acid: 16 studies tested it on its own. See all 34 studies
On Reddit: Little facial bumps get spot-treated; one user uses it twice weekly to tackle texture. 9 mentions
Both ingredients for acne
Salicylic Acid Some evidence
- Most studies found salicylic acid helped clear acne
- It often reduced pimples, blackheads and whiteheads
- It usually worked about as well as other common acne treatments
- Used with other acne treatments, it sometimes cleared acne better than those treatments alone
- Side effect results were very uncertain in one large review
Glycolic Acid Some evidence
13 studies tested it on its own. See all 22 studies
- Most of these studies found it helped clear acne
- It often reduced blackheads and whiteheads, and some studies also found fewer red, sore spots
- It cleared acne more than a placebo in some studies
- It worked about as well as some other acne peels and creams in several studies
- The most common side effects were peeling and other early skin irritation
Hyperpigmentation
Some evidence
Glycolic Acid: 15 studies tested it on its own. See all 23 studies
What the studies found
- Most studies found glycolic acid helped fade dark spots or patches
- It often worked better when added to another treatment than when that treatment was used alone
- It usually worked about as well as several other peel treatments for melasma
- Some studies found other treatments worked better, or that the fading did not last
- The most common side effects were irritation, discomfort, stinging and burning
Texture/Pores
Some evidence
Glycolic Acid: 3 studies tested it on its own. See all 6 studies
On Reddit: Little-bump spot treatment is its standout use, with commenters applying it directly to bumps across the face. 4 mentions
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 21 mentions across 6 threads
La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum on Reddit, in one place — 6 threads from r/30PlusSkinCare, r/SkincareAddiction and 1 more, summarized.
“My friend recommend La Roche-Posay Effaclar serum and, so far, it’s been a game changer.”
Positive
“I’ve been using it on my face for a couple of months now and my skin hasn’t been this consistently clear since taking the birth control.”
Positive
“I’ve started applying it to my chest and arms and they’re looking great now too.”
Positive
“The salicylic acid I use is from La Roche Posay (the effaclar Salicylic Acid Acne Treatment serum).”
Mentioned
“the particular serum I just mentioned is not only salicylic acid but also glycolic acid.”
Mentioned
“This combo by itself can be good for surface level discoloration as well as active acne but not actual, ‘3D’ acne scars.”
Mentioned
“I went and I bought the La Roche Posay Effaclar serum.”
Cautionary
“So far I’ve used it twice in three days and it STINGS everytime.”
Cautionary
“This stinging sounds like your skin is adjusting to the active ingredient. Try using it just once a week to start”
Cautionary
“PM: hadalabo lotion, la roche posay effaclar serum or tret 0.05% (2x a week), purito moisturiser”
Positive
“Current routine:”
Positive
“Type: oily-combo skin, acne-prone”
Positive
“i bought the Effaclar serum to try and fight that a bit (I use it 2x a week)”
Positive
“I have a bit of black heads on my nose and around it with visible pores so i bought the Effaclar serum”
Positive
“but not when i use Effaclar”
Positive
“Additionally: La Roche-Posay Effaclar 1.5% Salicylic Acid Serum AND La Roche-Posay Hyalu B5 Pure Hyaluronic Acid”
Positive
“Serum - I got these because I saw someone saying it reduced their pore size in 2 months.”
Positive
“But nothing seems to be working for my pores specifically.”
Positive





