Thanks for query.,
welcome to HCM..,
Laser hair removal
give rise to coloured (black to brown) deposition...
But it will faden away after 2 months ...so don't worry ..,
it will take time to disappear..
After Laser ..use concerned after laser creams (Ajelaic acid or kojic and Vit C)..
available there only..,
it need 3 to 4 sittings to correct side effects also...
hence go to your dermatologist
and solve it easily ok..,