Tanning increases the melanin in the skin. The laser is attracted to melanin, so if the skin has increased melanin it’s difficult for the laser to distinguish between hair and skin.
Tanning can cause complications such as burning or discoloration of the skin. It is best for the skin to be the lightest natural color to achieve optimal results and to maintain the integrity of the skin. You must limit your sun exposure as well as tanning booths for 2 to 4 weeks before and after treatment and wear a sunscreen with SPF 30 or higher on the areas to be treated.
This will greatly minimize the risk of temporary skin pigmentation and other complications.