A treatment for subcutaneous fat and/or cellulite includes delivering a beam of radiation to a subcutaneous fat region disposed relative to a dermal interface in a target region of skin. The beam of radiation affects at least one fat cell in the subcutaneous fat region without causing substantial unwanted injury to the epidermal region and causes thermal injury to a dermal region to induce collagen formation to strengthen the target region of skin in a target region of skin. The treatment can include cooling an epidermal region of the target region of skin.