Cos De BAHA Azelaic Acid 10% Serum (AZ) 30ml

I like using it on my face and neck, but I have also rubbed it onto my shoulders, hands, arms, and elbows, to help keep them soft and moisturized. I generally use just under one dropper of it every time I use it and put it mainly on my face and neck, but there's usually enough left on my hands that I can rub it into my elbows and shoulders and still benefit from it.

I have the feeling that I am seeing improvement in just over a week and it leaves my skin very hydrated

Love this product! It really helped with my redness, and made the very large pores on my cheeks almost non existent. It's also helping with fine lines in my forehead.