azelaic acid help

I do not recommend mixing retinol with azleiac acid, it's better to use retinol +PHA but also depends on skin. BHA (salicylic acid) helps with pores, AHA works on surface and such acids are usually called "fruit acids". Azelaic acid is a different ingredient, it's non-photosenstive, it can be used for sensitive skin, it helps with acne and it inhibits tyrosinase aka it helps with pigmentaiton. It can be ever use on rosacea. It's more gentle and it has different built than AHA, BHA or PHA. It is not recommended to use BHA and Azelaic Acid. Also, if you use retinol with any acid - don't use it at the same routine. It's better to just focus on one active ingredient at the time and once your skin gets used to retinol then try to experiment.

For first try I suggest don't used them together at the same time. You can used azelaic acid at another night when you're not using retinoid or you can used it in AM routine for azelaic acid and in PM routine for retinoid Once your skin get used to it, you can try to used both together, in really small amount and areas, to see how your skin react

I also use Azelaic Acid in the AM and either a BHA or retinoid in the PM. Agreed with the advice to introduce it slowly and see how your skin responds!