An itchy rash can occur after laser hair removal treatment. This happens because the hair follicles become irritated. You can apply cool washcloths to the area to help sooth it. You can also take an antihistamine and apply hydrocortisone cream. I recommend contacting your treating physician...
Typically there is 5-6 weeks between treatments to allow regrowth of hairs for the next treatment. Lasers only work on the hairs that are in the growing phase (not the resting or transitional phase - and we can't tell by looking at it which phase the hairs are in). They also work...
Thank you for your question. The type of radiation emitted during this type of procedure is concentrated visible light which has a longer wavelength than gamma and xray radiation which do harm human cells.