ForumsAcne and its treatm...General acne discus...Protein shakes Notifications Clear all Protein shakes Chop 24 MemberMember0(@chop24) Posted : 08/26/2018 10:09 am can protein shakes cause more acne breakouts? Quote Acne V M MemberMember30(@acnevm) Posted : 08/26/2018 3:49 pm Yes, because they usually contain sugar and caseine from dairy - which both aggravate acne.But if you buy healthy protein shakes with clean proteins without bad chemicals etc. then it is healthy for you. Quote