Does Topical Numbing Affect Laser Hair Removal Results?

Thank you for your question. I prefer to avoid the numbing creams for a number of reasons.  Firstly, the cream is white, and this is typically a barrier to light absorption if not all of it is removed.  Secondly, the systemic absorption is a concern if used on a large enough area of the body.  On the upper lip, no problem and very safe.  However, entire legs should never be done, and there have been reports of death. Make certain you are being supervised by a board certified dermatologist or plastic surgeon during your series for best results and safe treatments. I hope this helps.

Numbing cream should not affect the efficacy of the laser hair removal treatment. Laser targets the pigment in the hair root and even small amount of blood vessel constriction from the numbing cream does not reduce the efficacy.  Make sure you go to a reputable laser hair removal clinic supervised by a physician such as dermatologist.

Anatoli Freiman, MD, FRCPC, Toronto Dermatology Centre

The numbing cream may constrict blood vessels but the lasers used for hair removal target pigment, not blood vessels, so the cream does not affect the results of the laser.  Make sure you do not apply numbing cream to large areas since it can be absorbed and cause problems.  The LightSheer DUET laser has a vacuum that pulls up the skin just before the pulse.  It is more effective for hair removal and more comfortable so numbing cream is not necessary.