FAQs Laser Hair Removal


Laser hair removal uses bursts of light to selectively destroy hair follicles while leaving surrounding skin unharmed. Long lasting results are achieved much faster than with electrolysis, eliminating the need for frequent waxing, plucking and shaving. Razor bumps (pseudofolliculitis) are both treated and prevented.


After each treatment, much of the hair will fall out within 2 weeks. Approximately one-third of the hair follicles, which were actively growing, will have been destroyed in most patients. The other hairs, which were in the resting stage, will begin actively growing back over the next 4 to 8 weeks. It is best to schedule your next treatment during this growing phase. With each treatment, the number of hairs that grow back will decrease, because each time, a fraction of the remaining hair follicles are destroyed. Most patients require a minimum of 4 treatments for long-term results and up to 6 or 8 treatments to achieve the best results possible. Unfortunately, laser hair removal is considered cosmetic and is not covered by insurance.


In a study we published in the journal “Cosmetic Dermatology”, four treatments in the bikini area resulted in an average of 85% reduction of hair at six months follow-up. Data suggests that permanent hair reduction is likely in most patients. Hairs that are not destroyed become finer and lighter in color. This leads to further visible improvement in hair bearing areas and eliminates razor bumps (pseudofolliculitis). Approximately 5-10% of patients do not achieve lasting results with laser hair removal.


We use a cooling gel and cold air anesthesia on each area during treatment. There is a stinging sensation with each pulse of the laser. A topical numbing cream may decrease discomfort from the procedure. Topicaine, a very effective anesthetic gel, may be purchased in our office. Alternatively, LMX 4 or 5% cream (slightly more expensive than Topicaine) may be ordered from your pharmacy without a prescription. Apply a generous amount of Topicaine or LMX 30 minutes before your appointment and rub into the skin. Repeat this application after you check in for your appointment. In the bikini area or legs, plastic wrap may be used over the numbing cream to keep it in place and increase penetration into the skin. No more than a single 30 gram tube should be used in any given day to avoid the danger of lidocaine toxicity.


The best results are achieved in patients with dark hair and light skin. Blond, gray and white hair does not respond to treatment. A variety of skin types may be treated with our laser, including Asian and Mediterranean tones, but a gentler energy must be employed, requiring more treatments for improvement. Patients with a tan must wait at least 6 weeks for the tan to fade prior to treatment.


Laser hair removal is extremely safe, with infrequent occurrence of side effects. Laser light cannot penetrate the skin and cannot harm internal organs, but goggles must be worn to protect the eyes. Patients with darker skin and those with a tan are at higher risk for skin darkening (hyperpigmentation) and lightening (hypopigmentation). These changes in color usually fade with time. Blistering or scarring occur only rarely. To minimize the possibility of these adverse events, it is important to follow pre and post procedure instructions.

Connect with Us on

Brilliant Connections Shop

Keep up to date on the latest from Krauss Dermatology

Connect with us on Facebook and Follow us on Twitter and Instagram

Contact Us Today

By submitting the contact form, you agree to the Terms of Use:

Communications through our website or via email are not encrypted and are not necessarily secure. Use of the internet or email is for your convenience only, and by using them, you assume the risk of unauthorized use.

By submitting your email address and/or telephone number you are providing Krauss Dermatology authorization to contact you about appointments, information and special offers in the practice.

By submitting a form you hereby agree to hold Krauss Dermatology, its doctors and affiliates, harmless from any hacking or any other unauthorized use of your personal information by outside parties.

ATTENTION: If your communication is of an urgent or confidential nature, do not use this form and call us at 781.416.3500