If used too frequently, say everyday, then your skin will be irritated. I use this every other night to avoid irritation and it gets the job done. Other than that, this is a great product 10/10 would recommend.

Holy crap, this stuff is incredible! I’ve tried retinols, bhas and ahas, all sorts of acne prome ingredients but they all made mt skin irritatied and red. This azelaic acid serum cleared my acne and reddness within a WEEK. Sure, i have a tiny pimple here and there, but unlike before, I’m basically spotless and redless. 

Peach Slices - Syzu review for Redness Relief Azelaic Acid Serum

Es hora de ponerse picky