Benzoyl Peroxide

One of the most common – and most effective – treatments possible for mild acne, benzoyl peroxide is used daily by millions. It works by helping combat the bacteria that is partly responsible for acne in the first place: Propionibacterium acnes. It also helps to eliminate dead skin cells from the area. If those don’t move to the surface where they can be sloughed or washed off, they can accumulate, upping the odds of getting acne.

One possible side effect is excessive drying of the skin. It can also bleach fabric, and so should be used with care when treating acne while dressed.

The danger of side effects can be minimized by using the proper amount. If a 2.5% concentration is working, don’t assume that 10% is better, or will work faster. Higher dosage only increases the chances of side effects without any compensating value.

Resorcinol

Resorcinol is another popular OTC medication and is effective in many cases, especially when combined with other compounds such as sulfur. It functions by breaking down hardened skin, leading to more effective removal from the follicle and the area outside. That also produces lower chances of clogging, a main factor in acne formation.

It should not be used in conjunction with astringents such as alcohol.

Alcohol and Acetone

Both of these common chemicals are safe, but are generally much less effective than more modern acne treatments. Alcohol is a mild antibacterial and helps remove oil from the surface. Likewise, acetone is a degreasing agent and helps keep the surface clear. But the excess oil (sebum) that contributes to acne lies well under surface where it lends a growth medium for bacteria and helps clog pores.

Salicylic Acid

Often coming in the form of soaked pads, salicylic acid helps break down blackheads and whiteheads. It slows down the process of shedding dead skin cells inside the follicle, making build up and compaction less likely. It also helps remove them. This helps prevent bacteria build up in the sebum (skin oil) inside the pore.

It should not be combined with other treatments, unless recommended by your dermatologist. Excessive skin irritation can happen.

If acne persists for more than a couple of weeks, or grows worse, it’s best to consult a dermatologist.