Is there a reason a person can't have laser hair removal after chemotherapy and radiotherapy?

It is absolutely safe to have laser hair removal after chemotherapy. Especially as it was done so long ago. There are very few contraindications to laser hair removal. Most of them pertain to the integrity of the skin to be lasered, that there are no burns, open sores etc. As long as that doesn't pertain to you, you should be fine. Good luck!