Review on 🌟 Clear Skin Facial Serum with Azelaic Acid, Tea Tree, Niacinamide 10%, Salicylic Acid, and Retinol - Fast & Efficient Formula for Cystic Acne, Age-Defying, and Trouble Skin Relief, 1 Fl Oz (30ml) by Crystal Kong

Doesn't work and smells gross. The smell is so strong that I can no longer use it. Imagine someone using fake tea tree oil to mask the smell of a musty ashtray - that smells even worse. I used it for a month with no results and gave up, in the bin. I've used The Ordinary's azelaic acid with surprisingly good results (and it's virtually odorless). I'll stick with The Ordinary.