Is there a way to reverse laser hair removal?

Great question!  Unfortunately once you destroy the hair follicular units, there are gone forever.  If you desire hair in the bikini area, you will need to look into hair transplantation.  Stem cells and PRP only improve the growth of thinning hair, but will never bring back hair that is already gone.
Best of luck and hope this information helps!
- Dr. Roger Tsai  
Board Certified Plastic Surgeon

While reversal is not possible, there is the possibility for hair to still exist. There are various kinds of laser hair treatments. Some may be specific for hair reduction or temporary hair loss, while others are meant for permanent hair loss.  Also, different follicles may be in different phases of their cycle. If the recommended amount of treatments was not done, then there could still be hair that may grow over time. The effectiveness of the treatment is also affected by the darkness of hair.  Overall, this means that depending on how many treatments were done, the type of laser used, and the darkness of your hair, you may still have some hair that can grow over time even though you cannot reverse the hair you have lost. 

Thank you for your question. Unfortunately, or fortunately for most patients, hair follicles which have been destroyed by laser hair removal will not return. Often patients are left with some residual hair which is much finer. Attempts to promote hair growth with PRP and stem cells are likely to be unsuccessful.I hope this was helpful - Dr. Moore.