I just got a week ago and had the chance to use it twice so far so I cant comment on its effectiveness. I have rosecea, so i have a lot of redness on my face and heard that azelaic acid is good for rosecea. I had to order this from an Australian drugstore online. Shipping was pricey so I ordered 3 tubes to make it worth. Once you spread it on, the consistency is very like glue. It kinda gives a blurring effect since it feels thick and not very spreadable. The face seems to be less red right away, the next morning the pustules seems to be less bumpy. Not sure if it is because of its thickness or what. I will add a followup in 6-8 weeks and hopefully there will be some positive and more apparent results!
It pills like CRAZY! I tried mixing it with TO HA serum and put it before the moisturizer as recommend in reddit and it still pills! The second time I decided to wear it after the moisturizer since apparently it is still effective, it pills less but the next morning you will have to make sure to wash well your face since you will feel that the product is not absorbed completely.
