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Dermabrasion: This is thought to be the most effective treatment for acne scars. Under local anesthetic, a high-speed brush or fraise used to remove surface skin and alter the contour of scars. Superficial scars may be removed altogether, and deeper scars may be reduced in depth. Dermabrasion does not work for all kinds of scars; for example, it may make ice-pick scars more noticeable if the scars are wider under the skin than at the surface. In darker-skinned people, dermabrasion may cause changes in pigmentation that require additional treatment.

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Salicylic Acid Acne Treatments For the Body – How to Buy One That Will Work And NOT Get Scammed
When it comes to salicylic acid acne treatments, they are definitely not all created equal. While there are some very good ones on the market, many are just a big waste of money.
Source: ezinearticles.com