- Reaction score
- 60
Other zinc forms might theoretically work, but zinc sulphate was the type of zinc used in this study (maybe others?): h ttps://cdn2.shopify.com/s/files/1/0028/2935/3030/files/Fer-_Inhibition_of_5a-reductase_activity_in_human_skin_by_zinc_and_azelaic_acid.pdfIs there a reason the form of zinc needs to be zinc sulfate? Sulfates can be drying and are known to irritate the skin