Laser Hair Removal: How It Works, What to Expect, and Why It’s Worth It
Unwanted hair can be frustrating, time-consuming, and costly to manage with shaving, waxing, or tweezing. Laser hair removal offers a modern, long-term solution for reducing unwanted hair and can decrease the need for frequent shaving, waxing, or tweezing.
In this comprehensive guide, we’ll explain how laser hair removal works, which areas can be treated, who it’s best for, what to expect during and after sessions, and how many treatments you need for lasting results.
Whether you're curious about bikini laser hair removal, full body treatments, or laser for darker skin tones, this guide answers everything.
Laser hair removal uses concentrated beams of light (laser energy) to target pigment (melanin) in hair follicles. The heat generated by the laser damages the hair follicle, helping to reduce future hair growth while minimizing exposure to the surrounding skin.
Modern devices use different wavelengths and technologies to customize treatment based on skin tone, hair thickness, and body area.
Candela GentleMax Pro (Nd:YAG + Alexandrite)
Lumenis Splendor X
Soprano ICE (diode laser for all skin types)
Cynosure Elite+
Laser targets melanin in the hair shaft
Heat damages the hair follicle, helping to reduce future hair growth
Treated hairs fall out over 1–2 weeks
Multiple sessions are needed to catch hairs in the active growth (anagen) phase
Wondering when to begin your treatment series? Read our guide to the best time of year to start laser hair removal.
Because only hairs in the active growth phase respond optimally to treatment, a series of laser hair removal sessions is typically needed to achieve significant long-term hair reduction.
Laser hair removal can be used to reduce unwanted hair on many areas of the face and body, depending on individual skin and hair characteristics.
Face (upper lip, chin, sideburns)
Underarms
Bikini or Brazilian
Legs (full or half)
Arms and forearms
Back and shoulders
Chest and stomach
Neck and jawline
Fingers, toes, and hands
Older lasers only worked well on light skin and dark hair. Today, technologies such as Nd:YAG lasers allow laser hair removal to be performed on darker skin tones when appropriate settings and treatment protocols are used. Individual assessment remains important to help minimize the risk of burns or pigment changes.
Alexandrite laser: Best for fair to olive skin (Fitz I–III)
Nd:YAG laser: Best for medium to dark skin (Fitz IV–VI)
Diode laser: Versatile for most skin types
Treatment sensations vary from person to person and may feel like temporary warmth, tingling, or a snapping sensation. Cooling technology may be used during treatment to help improve comfort.
For sensitive treatment areas, additional comfort measures may be discussed when appropriate.
Proper preparation can help make your laser hair removal treatment more effective and reduce the risk of skin irritation. Follow the specific instructions provided by your treatment provider. In general, you may be advised to avoid tanning and excessive sun exposure before treatment and to shave the treatment area as directed. Avoid waxing, tweezing, or plucking before your appointment because the laser needs pigment in the hair follicle to effectively target the hair.
Let your provider know about medications, topical products, recent sun exposure, or changes in your skin before treatment.
Your provider will select laser settings based on factors such as your skin type, hair color and thickness, treatment area, and individual response. During treatment, laser energy is delivered to the targeted area to damage hair follicles and reduce future hair growth.
Treatment sensations vary from person to person and may include temporary warmth, tingling, or a snapping sensation. The length of the appointment depends on the size and number of areas being treated.
Temporary redness, mild swelling, or skin sensitivity may occur after treatment. Follow the post-treatment instructions provided by your laser technician and treat the area gently.
Because treated skin may be more sensitive to sunlight, it is important to limit unnecessary sun exposure and use appropriate sun protection as directed. Avoid activities or skin-care products that may irritate the treated area until the skin has settled.
Treated hairs may gradually shed after the appointment. Because hair grows in different cycles, multiple laser hair removal sessions are typically needed to achieve significant long-term hair reduction.
The number of treatments varies from person to person. Factors such as the treatment area, hair color and thickness, skin type, hair-growth cycle, and individual response can all influence the treatment plan.
At Park Slope Laser Aesthetic Center in Brooklyn, your treatment plan can be customized based on your skin and hair characteristics and your goals.
