Is it possible for you to put on deodarant afterhaving laser hair removal?

Later that day: Sure. Laser energy is absorbed mainly by the pigment in the shaft of the hair. Energy transferred to the stem cells in the base of the hair follicle kills them. That heat temporarily "opens" up the pores of the skin, but the epidermis should be left intact. You can use deodorant and anti-antiperspirants starting a few hours after your treatment. If you get blisters or crusting, avoid them.

Wait a bit: LHR can cause burns and skin irritation. you would be best served by waiting at least 24h before applying any occlusive agent. your skin will be a bit cooked from the procedure and i'd recommend some ice and aloe gel then wait a day or two before irritating the skin anymore.