I will focus on reducing irritation because I use BHA DIFFERIN Allantoin 0.5% aloe vera 200:1 0.5% beta glucan 2% Glucosamine 4% vitamin B3 4% Green Tea Extract EGCG 3% DMAE 4% how to mix? I want detailed steps How many ml of water do I need? If assuming you want a 100 ml product, how do you estimat...
