Azelaic Acid 10% Serum Duo Set (30ml*2ea) (AZ)

"This serum has quickly become a staple in my skincare routine. It absorbs beautifully, feels incredibly light, and has noticeably improved my skin's texture and clarity in just a few weeks. My complexion appears brighter and more even-toned without any irritation."

— Flossie (5/5)

"One of my favorite azelaic acid serums! The formula is lightweight and non-sticky, and it's made a noticeable difference in both breakouts and post-inflammatory hyperpigmentation. My skin looks clearer, brighter, and more even over time."

— Fabienne (5/5)

"I've been using this serum for years and always return to it. It effectively calms hormonal breakouts, fades dark spots, and brightens my complexion without any greasy feeling. It's affordable, effective, and layers easily with other skincare products."

— Luciana (5/5)

"Azelaic acid is a staple in my routine, and this Cos De BAHA serum never disappoints. It's lightweight, absorbs quickly, and has helped keep my skin clear, bright, and more even-toned. I've noticed my post-breakout marks fade much faster, and the price makes it an amazing value."

— Suzie (5/5)

So good

"Settles in smoothly. Stays calm even when paired with adapalene. Where azelaic formulas can tingle on first contact, this one keeps the skin quiet and steady. No heat, no flare-ups—just an easy, cooperative layer in the routine."

— Lora (5/5)

The real deal!

"Great product! Used to get on another shopping venue but they stopped carrying it. Purchased with ease on this site. This stuff is the real deal. Works so well."

— HeidiG (5/5)

I recommend it

"Tackles discoloration and inflammation in a single step. Breakouts settle down, tone looks clearer, and skin stays balanced without feeling overloaded."

— Ina (5/5)