Can stem cell particles and cooling restore thinning hair?

This study tests whether applying exosomes (tiny particles from stem cells) to the scalp, along with microneedling and a cooling device, can improve hair density in adults with non-scarring hair thinning. About 15 healthy men and women will be randomly assigned to one of three treatment groups and receive four sessions over 9 weeks. Researchers will measure hair changes using special imaging over 8 months to see if this combination is safe and effective.