Hello from Geli
I cannot use niacinimide as in any strength even in makeup or even body lotions will cause closed commodones leading to cystic acne. I'm still working on hyperpigmentation due to this.
My skin does not like essential oils and I have to be careful with vitamin e in products very low amounts.
Most mineral sunscreens clog my pores and dry my face out
I do not tolerate glycolic acid well or sasylic acid both exacerbate breakouts.
I tolerate benzoyl peroxide and sulfer at small amounts not very often.
I tolerate differin well only if I use sandwich method.
I'm not sure if azelaic acid breaks me out I got lots of breakouts on my cheeks from paulas choice azelaic acid booster.
Hyloronic acid serums applied directly to my face cause breakouts it has to be mixed with something.