We already have that, it's a hair transplant. Otherwise you are asking for a cure like treatment with limited sides and non frequent application? It's probably HMI, and probably going to cost a down payment on a house just like any similar new treatment would cost.Q. How do you cure fingernails that grow too long? How do you cure bad body odor? Yellowing teeth?
What would it take to accomplish this stuff? Gene altering? Perfect topical drugs with zero side effects or systemic action?
A. It isn't necessary to cure a problem if there is a good practical TREATMENT OPTION.
That's all we need for hair loss. Something to put terminal hairs back onto our heads. All it has to do is work, not cost the price of a house, and not need constant daily drugs for the rest of your life. We don't need genetic cures or drugs with unrealistic super-powers.