ForumsThe RegimenThe RegimenStarting With 5% Bp... Notifications Clear all Unless you have severe, widespread, and scarring acne, The Regimen is normally my suggestion for the most effective acne treatment.My suggested acne treatment Learn The Regimen → Learn The Regimen → Starting With 5% Bp? Cemeo MemberMember0(@cemeo) Posted : 05/29/2014 1:19 pm I'll be getting some 2.5% bp in a couple of days, but right now I only have 5% bp at hand. So my question is; can i use the 5% bp for a week and then switch back to 2.5% without hurting anything? Quote Aldo M G MemberMember4(@aldomg) Posted : 05/29/2014 11:21 pm Well 5% and 2.5% works the same for me, well... 2.5% irritates me more than 5% i dont know why lol.So yeah, just do it, not a problem I think. Quote