Home › Cosmetic Science Talk › Formulating › General › Is PH grade worth the extra bucks over USP grade? General Is PH grade worth the extra bucks over USP grade? Posted by DaveStone on August 12, 2021 at 12:45 am https://www.makingcosmetics.com/Vitamin-B3-Niacinamide-USP_p_317.html https://www.makingcosmetics.com/Vitamin-B3-Niacinamide-PC_p_1501.html Graillotion replied 3 years ago 2 Members · 3 Replies 3 Replies Graillotion Member August 12, 2021 at 2:01 am pH options for (Face) cream with Niacinamide. — Cosmetic Science Talk (chemistscorner.com) There is a search bar on the top right corner…. Type ‘Niacinamide’ and hit ‘GO’. DaveStone Member August 12, 2021 at 4:54 am Graillotion said: pH options for (Face) cream with Niacinamide. — Cosmetic Science Talk (chemistscorner.com) There is a search bar on the top right corner…. Type ‘Niacinamide’ and hit ‘GO’. My mistake…I meant to say PC grade rather than PH. I just wanted to know if pharmaceutical grade (for anything, really) is worth the extra money. Graillotion Member August 12, 2021 at 4:58 am My chemist said….Nope. So I use the cheaper one at 2%…at a pH around 4.7-4.8…and no issues. Log In to Reply Log in to reply. Public All Members Only Me PublicAll MembersOnly Me Public All Members Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now