AZ Azelaic Acid 10% Serum — Reddit Reviews
by Cos De BAHA
Updated November 11, 2026
Research supports azelaic acid for acne; Redditors report clearer skin, fading marks, breakouts.
What the community says
This 10% azelaic acid serum pairs the acne-focused active with aloe, niacinamide, and panthenol. Research supports azelaic acid for acne, and Redditors report clearer skin and faded marks. Breakouts and purging still show up, especially for reactive users.
What this means for you
What people love
- 10% azelaic acid; Reddit HG for clearer skin
- Redditors report fading PIE and PIH, especially newer marks
- Niacinamide, panthenol, and aloe included
Watch out for
- Breakouts can get bad enough to force stopping
- Purging may precede fewer new breakouts
- Reactive retinoid routines can tip into over-exfoliation
Product details
Where to buy
What the science says
Azelaic acid has strong evidence for clearing acne, often working about as well as tretinoin and better than a placebo 1. For rosacea, it also has strong evidence, with studies reporting fewer spots and less redness, though it did not seem to help visible blood vessels 2. Azelaic acid has some evidence for fading dark patches, especially melasma, but results were mixed for other pigment concerns 3.
- Azelaic Acid for acne Strong evidence · 31 studies
- Azelaic Acid for rosacea Strong evidence · 17 studies
- Azelaic Acid for hyperpigmentation Some evidence · 12 studies
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
How we grade researchFull ingredient list · 13
Cos De BAHA AZ Azelaic Acid 10% Serum ingredients
Aloe Barbadensis Leaf Extract, Propylene Glycol, Azelaic Acid (10%), Polysorbate 20, 1,2-Hexanediol, Propanediol, Panthenol, Niacinamide, Sodium Hyaluronate, Camellia Sinensis Leaf Extract, Momordica Charantia Fruit Extract, Sambucus Nigra Flower Extract, Leontopodium Alpinum Extract
Listed in label order, highest concentration first. Linked ingredients have their own page.
Real Reddit threads — 20 mentions across 15 threads
Cos De BAHA AZ Azelaic Acid 10% Serum on Reddit, in one place — 15 threads from r/AsianBeauty, r/tretinoin and 4 more, summarized.
“-Cos De BAHA Azelaic Acid 10 serum”
Mentioned
“————————-Serums/Treatment:————————-”
Mentioned
“I love hauls like thesssseeeeee! Pls review the BoJ products and the Cos de Baha ones 🙏”
Mentioned
“before I started this, I used Cos de baha azelaic acid 10%”
Positive
“Cos de baha azelaic acid 10% (will be using Skinoren in PM instead soon)”
Positive
“Amazing results! I love the Cos de Baha AA and the Etude SPF ☺️”
Positive
“cos de baha 10% azelaic acid”
Positive
“AM: skin1004 centella ampoule, cos de baha 10% azelaic acid, dr g clear soothing cream”
Positive
“Oops just realized I forgot to include the Cos de Baha Azelaic Acid in my reviews!!”
Positive
“My HG AA product, never irritates my skin and makes my skin super clear”
Positive
“I barely ever break out these days and I think its because of this!!”
Positive
“I started with cos de baha 10% azelaic acid before skinoren.”
Mentioned
“Serums — AM: COSRX Propolis Full Fit Ampoule, Haruharu Centella 4% TXA Gel Serum, Cos De BAHA AZ Azelaic Acid 15% Serum”
Positive
“If you ever hit a random reactive phase, the first thing I'd pull is the azelaic on retinol-adjacent days.”
Positive
“Those two don't conflict per se, but the combined turnover is where I've seen people quietly over-exfoliate without realizing.”
Positive
