Laser hair removal: Compare providers from our network

The laser emits light absorbed by melanin, the pigment in the hair. That energy converts to heat and damages the follicle, reducing its ability to produce hair. Only follicles in the active growth phase respond, which is why sessions are spaced weeks apart.

Because the treatment relies on pigment contrast between hair and skin, it works best on dark hair. Grey, white, and very fine blonde hair respond poorly.

Realistic expectations matter here more than with most treatments:

• Most people see substantial reduction rather than complete removal
• A course of six to eight sessions is typical, spaced four to eight weeks apart
• Areas differ, with coarse dark hair responding better than fine hair
• Maintenance sessions are commonly needed over time
• Hormonal changes can prompt new growth regardless of previous treatment

Skin tone is the key safety variable. Older devices worked well only on light skin with dark hair; longer-wavelength lasers such as Nd:YAG allow safer treatment of deeper skin tones.

Using an inappropriate device or settings on deeper skin can cause burns, pigment loss, or darkening. A provider should assess your skin type, explain which device they will use, and patch test before a first full session.

Consultation and patch test. Your provider assesses your skin type and hair colour, sets expectations, and tests a small area to check your response.

Preparation. Avoid sun exposure and self-tan beforehand. Shave the area rather than waxing or plucking, as the follicle needs to be present.

Treatment. Protective eyewear is worn. The handpiece is passed over the area with a cooling mechanism; most describe a snapping sensation. Sessions range from minutes to an hour by area.

Aftercare. Expect redness and mild swelling around the follicles for a day or so. Avoid sun, hot baths, saunas, and exercise for 24 to 48 hours, and use sunscreen on treated skin.

Course and review. Sessions repeat every four to eight weeks depending on area. Reduction becomes apparent progressively across the course.

Laser hair removal is suitable for most people, but results and safety vary. It is less suitable if you:

• Have grey, white, or very fine blonde hair, which lacks the pigment the laser targets
• Have recently had significant sun exposure or used self-tan
• Are pregnant, as treatment is generally deferred
• Take medication that increases light sensitivity
• Have an active skin infection or condition in the area
• Have a history of keloid scarring, which warrants caution

Side effects are usually mild and short-lived when the right device and settings are used:

• Redness and swelling around the follicles, typically settling within a day or two.
• Temporary discomfort, often described as a snapping or warm sensation.
• Pigment changes, either lightening or darkening of the skin, more likely in deeper skin tones or with sun exposure.
• Burns or blistering, uncommon, and usually the result of inappropriate device settings.
• Paradoxical hair growth, rare, where treatment stimulates fine hair in an adjacent area.
• Scarring, rare, and more likely if blistering is picked or infected.