Notes for myself: Do not use cocokind ceramide serum or byoma moisturizer after exfoliating or the morning after exfoliating. Both have lactic acid. Vitamin c serum is okay the next morning. Hydroquinone on nights I use adapalene, don't put on my eyelids. Use topicals as a spot treatment. Do not use under my eyes with Hydroquinone or on exfoliating nights. Trying Cicaplast baume at night for sebaceous filaments. Use one exfoliant at a time. Use together Niacinamide + retinol Sulfur + Zinc AHA's + Ceremides and glycerin Vitamin C + Vitamin E, Ferulic acid Don't use together Retinol x AHA's BHA's Retinol x Vitamin c AHA's BHA's x retinol AHA's BHA's x niacinamide AHA's BHA's x Vitamin C Vitamin c x niacinamide cetearyl alcohol is comedogenic for me. (Azelaic booster, celimax ceramide serum, byoma moisturizer) oleth-3 phosphate is comedogenic for me. (DRMTLGY sunscreen) Parkii butter is comedogenic for me. (topicals)