Unlike dermabrasion, there is no evidence that microdermabrasion is an effective treatment for acne. Common destructive treatment methods include carbon dioxide lasers, dermabrasion, surgical excision, electrocoagulation and chemical peels. Reported treatments include topical agents, dermabrasion, cryotherapy, laser therapy, and surgical excision. Like dermabrasion, ablative lasers work by destroying the dermis to a certain depth. Ice-pick scars do not respond well to treatment with dermabrasion due to their depth. Phototherapy, dermabrasion and radiofrequency have been newly added to the Department of Dermatology. Dermabrasion or laser surgery may also be used. Dermabrasion and microdermabrasion are now rather commonplace cosmetic procedures which use mineral abrasives. Dermabrasion procedures are surgical, invasive procedures that typically require a local anaesthetic. Dermabrasion has fallen out of favor with the introduction of laser resurfacing.