Papular acne scars on the chin treated with pinhole method

Papular acne scars are skin colored or hypopigmented, soft, elevated lesions on the chin and trunk. Especially the scars on the chin are 1-3 mm in size, and look like the cobblestones frequently. They result from destruction of collagen and elastin fibers in the dermal tissues around the hair follicles after acne inflammation. These papular scars are one of the most difficult acne scars to treat. The pinhole method using an Er:YAG laser creates multiple tiny holes penetrating from the epidermis to the deeper dermis.

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