Hair came back much thicker after the 4th laser hair removal?

It always takes a series of treatments to get results with laser hair removal. It may be that the parameters of the laser may need to be adjusted. I recommend getting a formal evaluation with a laser hair removal expert. Best, Dr. Emer

Hi thanks for your query.First to understand at least you need 8 sessions to achieve 70 percent hair reduction.to target  the active growth phase of the hair follicle The .next factor is the energy and fluence sitting would had been inadequate.Hence do discuss the parameters with your provider and get treated in a clinic with a board certified dermatologist. to attain optimal results.  

Thank you for your question! What happens after first few sessions is that existing hair is falling out. If your hair growth did not slow down and if your hair became thicker, then you may be experiencing reverse effect when laser treatment encourages hair growth. This happens with number of patients and it is hard to tell why. Best of luck!