There are a number of mild chemical peels available over the counter, but acne scar removal requires a stronger peel typically administered by a doctor or dermatologist. Trichloroacetic acid (TCA) peels are slightly stronger than alpha hydroxy acid (AHA) peels and may be used for acne scar treatment. The strongest type, phenol peels, may cause significant swelling and require up to two weeks of recovery time at home. Neither are recommended for people with active severe acne.
It is a myth that women get acne because they don't wash enough. Too much washing or scrubbing the skin harshly can make acne worse. And washing away surface oils doesn't do much to prevent or cure acne, because it forms under the skin. The best way to clean the face is to gently wash it twice a day with a mild soap or cleanser. Be careful to remove make-up without harsh scrubbing.
A recent study has found a difference between strains of acne bacteria, which could have a significant impact on acne treatment down the road. This study, published in the Journal of Investigative Dermatology, found that these strains play a role in the severity and frequency of developing pimples. One particular strain of P. acnes was found among study participants that exhibited few symptoms of acne. Researchers came to the conclusion that this “good” strain of bacteria features a natural defense mechanism that fights back bacteria which might infect the cell. Researchers are hopeful that this discovery will help dermatologists better and more accurately prescribe effective acne treatment in the future, and reduce the severity of acne by ridding the skin of bad acne bacteria while preserving the good. 
Lasers: Dermatologists often remodel collagen using lasers, "which do not completely eliminate acne scars but can improve them by 30% or more," according to Dr. Woolery-Lloyd. "These can be helpful in reducing the redness associated with acne marks and scars. I use a pulse-dye laser called the V-Beam for red scars. When treating older scars that are no longer red, I like to use the Fraxel laser. When lasers are used to treat acne scars, the results can differ dramatically based on two things: how many treatments you have done, and how much social downtime you're willing to accept as part of the recovery process," says Dr. Bowe. "Erbium laser resurfacing is also another option and it's more aggressive than Fraxel," says Dr. Shah. "It's a minimal burning of surrounding tissues and has fewer side effects like less swelling and redness, but it's won't work for those with darker skin tones."
Exfoliating cleansers and masks: A variety of mild scrubs, exfoliants, and masks can be used. These products may contain salicylic acid in a concentration that makes it a very mild peeling agent. These products remove the outer layer of the skin and thus open pores. Products containing glycolic or alpha hydroxy acids are also gentle skin exfoliants.
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