Laser Hair Removal

Medical-grade laser hair removal for all skin types using platforms matched to Fitzpatrick skin classification. Common treatment areas include the face, underarms, arms, legs, back, chest, and bikini. Sessions are spaced four to eight weeks apart to capture successive hair growth cycles; most patients achieve sixty to eighty percent long-term hair reduction after six to eight sessions with periodic maintenance.

Laser hair removal at Complexions Medical Spa Boston uses medical-grade platforms calibrated to the patient's Fitzpatrick skin type, hair colour, and treatment area to safely and effectively reduce unwanted hair across the full body. The mechanism of laser hair removal relies on selective photothermolysis: the laser energy at a melanin-absorbing wavelength is delivered in a pulse duration matched to the thermal relaxation time of the hair follicle, allowing heat to build in the melanin-rich hair shaft and bulge to a level that damages the follicular stem cells without overheating the surrounding epidermis. Alexandrite (755 nm) and diode (810 nm) wavelengths are the most effective for lighter skin types (Fitzpatrick I–III) with dark hair, as the high melanin contrast between the dark hair and pale epidermis allows aggressive fluences with low epidermal risk. For patients with darker skin tones (Fitzpatrick IV–VI), the Nd:YAG wavelength (1064 nm) is the preferred option: its lower melanin absorption reduces the risk of competing energy uptake in the epidermal melanin that would produce post-inflammatory hyperpigmentation or epidermal burns, while its longer wavelength penetrates more deeply to reach the bulb in terminal follicles. Because laser hair removal only destroys follicles during the anagen (active growth) phase — the stage during which the hair bulb is populated with melanin and in proximity to the dermal papilla — multiple sessions are required to treat successive cohorts of follicles as they cycle into anagen. Sessions are spaced four to eight weeks apart depending on the body area (areas with shorter hair cycles, such as the face, are treated on shorter intervals). A standard course of six to eight sessions achieves sixty to eighty percent long-term hair reduction for most patients; a small number of periodic maintenance sessions per year may be required thereafter. Common treatment areas include the upper lip, chin, sideburns, underarms, bikini and Brazilian, legs, back, and chest. Topical numbing cream is available for sensitive areas and is typically applied thirty minutes before the session.