Botox cosmetic treatment tips from the top Medispa clinic in Bracknell, Berkshire. Acne products come in many formulas. Benzoyl peroxide kills P. acnes bacteria; use it all over to prevent breakouts. A 2.5 or 5.5 percent formula works without flaky side effects. Blackheads hate salicylic acid. Salicylic acid is really only ideal for blackheads and …