Does Laser Hair Removal Hurt?
Medically reviewed by
Brian V. Heil, MD, FACS, board certified plastic surgeon
Published November 12, 2026 · Updated
Yes, briefly. Mayo Clinic says you may feel a quick snapping sensation, and many people say the laser pulses feel like a rubber band snapped against the skin. How much you feel depends on the body area, how dark or tanned your skin is, and whether the skin is cooled during treatment.
Why does laser hair removal sting?
The laser targets melanin, the pigment in the hair. As Mayo Clinic puts it, the light turns into heat, which damages the hair follicles. The principle is called selective photothermolysis, and dark hair rich in eumelanin absorbs these wavelengths readily, which is why dark hair takes up more of the energy. Cleveland Clinic describes the feeling as a series of stings.
What makes it hurt more or less?
| Variable | Which way it moves the feeling | Why |
|---|---|---|
| Body area | Some areas sting more than others | Upper lip treatment is associated with discomfort and pain. In one study of 53 people on one device, the chest and abdomen were the most painful areas and the neck and underarms the least. |
| Skin type and tan | Darker or tanned skin can hurt more | Pigment in the skin competes for the laser energy, which raises the rate of pain and blistering, and pain is especially a problem with dark or tanned skin. |
| Skin cooling | Cooling makes it more comfortable | Most laser systems build in cooling to protect the skin and reduce pain, by cold air, contact cooling or cryogen spray. |
How is the feeling kept manageable during a session?
We use two devices, Sciton BroadBand Light and the Emvera Diolux laser, both chosen with sensitive skin in mind. Your skin and hair color are assessed first, and they decide which device treats you. Treatment areas are cooled, and the snap and heat stop when the pulse does.
You may also notice a cool feeling from the cooling device or gel, as Mayo Clinic notes. Larger areas are more about duration than intensity: an upper lip takes under five minutes, a full back twenty to thirty. See how our laser hair removal course works for areas and session planning.
We ask you to shave between sessions, and to avoid sun and self-tanner before treatment, in line with Mayo Clinic’s advice on avoiding sun exposure and tanning beds. The sun rule matters because tanned skin can make laser hair removal less effective and lead to side effects. For the full course from first session to last, read 5 things to know before laser hair removal, and if you are weighing a home device, see what to know before DIY laser hair removal.
What is normal afterwards, and when should you call?
Normal: discomfort, swelling and redness, and the redness often looks like a mild sunburn. Mayo Clinic says these common effects usually go away within a few hours, and the AAD says the most common side effects are minor and last 1 to 3 days. Afterward and between sessions, Mayo Clinic advises protecting the treated areas from sun exposure for six weeks and using a broad-spectrum sunscreen with an SPF of 30 or higher every day.
Not normal: blistering, crusting, a burn, or a change in skin color. Mayo Clinic lists blistering, crusting, scarring and changes in skin texture as uncommon side effects, and the AAD warns that in inexperienced hands, burns, permanent changes to your skin color and scars can occur. Over-the-counter numbing creams carry a risk of their own: the FDA warns that high-concentration lidocaine products applied over large areas of skin, for prolonged periods or under a covering, may cause serious injury such as an irregular heartbeat, seizures and breathing difficulties.
If anything on the not-normal list appears, call our Upper St. Clair office at (412) 835-5544. More laser and skin questions are on the Acqua Blu blog.
Frequently asked questions
Can you use numbing cream before laser hair removal?
Sometimes. The AAD says some patients receive a numbing gel, which helps when a small area of very sensitive skin is treated, and that it takes about 30 to 60 minutes to work. Mayo Clinic also notes that a healthcare professional may apply a numbing cream to reduce discomfort.
Should your skin still sting after the session?
Some discomfort for a short while is normal, and the AAD says applying a cool compress can help reduce it. If you see blisters or crusting instead, call your provider.
Is at-home laser hair removal less painful?
At-home devices run at lower energy. A 2019 review contrasts low fluence home-use devices with high fluence professional ones, and says they also differ in how they remove hair. No study cited in this article measures pain from a home device directly. The closest is a small trial of a low-fluence diode laser, where most patients reported a slight but bearable sensation of heat.
Do you need to shave before laser hair removal?
Yes. Mayo Clinic says to shave the treatment area the day before your appointment, and Cleveland Clinic says two to three days before. Cleveland Clinic adds that the treatment won’t work on areas where the hair is longer than a grain of rice.
For the areas we treat and current packages, visit our laser hair removal page.
Sources
- American Academy of Dermatology. Laser hair removal: FAQs. https://www.aad.org/public/cosmetic/hair-removal/laser-hair-removal-faqs
- Mayo Clinic Staff. Laser hair removal. Mayo Clinic. https://www.mayoclinic.org/tests-procedures/laser-hair-removal/about/pac-20394555
- Cleveland Clinic. Laser hair removal. https://my.clevelandclinic.org/health/treatments/21757-laser-hair-removal
- Bhat YJ, Bashir S, Nabi N, Hassan I. Laser Treatment in Hirsutism: An Update. Dermatol Pract Concept. 2020;10(2):e2020048. https://pmc.ncbi.nlm.nih.gov/articles/PMC7190465/
- Ugonabo N, Chapas AM, Rohrer TE. Use of Simultaneous Emission of Nd:YAG and Alexandrite Lasers in BLEND Mode for Hair Removal and Permanent Hair Reduction. Lasers Surg Med. 2026;58(6):462-473. https://pmc.ncbi.nlm.nih.gov/articles/PMC13371785/
- Nayak UKS, Kakroo NS, Shenoi DS. Wooden Spatula for Pain Reduction in Upper Lip Laser Hair Removal. J Cutan Aesthet Surg. 2018;11(1):38-39. https://pmc.ncbi.nlm.nih.gov/articles/PMC5921449/
- Das A, Sarda A, De A. Cooling Devices in Laser Therapy. J Cutan Aesthet Surg. 2016;9(4):215-219. https://jcasonline.com/cooling-devices-in-laser-therapy/
- Barolet D. Low fluence-high repetition rate diode laser hair removal 12-month evaluation: reducing pain and risks while keeping clinical efficacy. Lasers Surg Med. 2012;44(4):277-281. https://doi.org/10.1002/lsm.22021
- Town G, et al. Light-based home-use devices for hair removal: Why do they work and how effective they are? Lasers Surg Med. 2019;51(6):481-490. https://doi.org/10.1002/lsm.23061
- US Food and Drug Administration. FDA Warns Consumers to Avoid Certain Topical Pain Relief Products Due to Potential for Dangerous Health Effects. 2024. https://www.fda.gov/news-events/press-announcements/fda-warns-consumers-avoid-certain-topical-pain-relief-products-due-potential-dangerous-health
Treatments at Acqua Blu Medical Spa in Upper St. Clair are provided under the direction of Brian V. Heil, MD, FACS, the practice’s founder and medical director. A consultation is the best way to find out what fits your skin and your goals.
This is general information, not medical advice. Candidacy and treatment parameters are determined by a licensed provider at a consultation.
