[Jakhyia]

Hi Melinda. I’m new to formulating and seen your comment. I am experimenting with azelaic and I’m finding that the 20% of propanediol or glycol I’m using in my formula is leaving a greasy/oily residue. I’m using azelaic acid at 10%. Have you had this issue? What do you suggest to add into the formula to resolve this? Aim is to make a serum.