Some procedures that dermatologists regularly do include: Biopsies. A dermatologist can perform different types of biopsy procedures to diagnose or rule out skin cancer or other conditions. Laser therapy. Laser therapy treatments may be used to remove warts, moles, sun spots, tattoos, acne scars, blemishes, wrinkles, or unwanted hair. Surgical excision. A dermatologist may perform a surgical excision to remove growths like moles, skin tags, and lesions. This is usually done with local anesthesia so you don’t feel pain. Cryotherapy. Cryotherapy is a unique treatment that involves controlled exposure to extremely cold temperatures. It can be used to treat skin conditions like warts, skin tags, and some tumors. Sclerotherapy. Sclerotherapy is a procedure that helps treat spider and varicose veins. It involves injecting chemicals into damaged veins which help to diminish the appearance of these types of veins. Mohs surgery. This type of skin cancer surgery removes thin layers of tissue around a tumor. Between each removal, the doctor examines the skin for signs of additional cancer cells. When no more cancer cells are found, they stop removing tissue. Chemical peels. Chemical peels remove damaged skin. Peels can help rejuvenate new skin and reduce signs of aging. Cosmetic injections. A dermatologist can help diminish the appearance of wrinkles and sagging skin by injecting Botox or fillers during an office visit. Dermabrasion. This exfoliating technique can reduce the appearance of fine lines, age spots, acne scars, and precancerous skin patches. Tumescent liposuction. Dermatologists use liposuction to remove unwanted fat from targeted areas of your body.