People aged 50 plus loses hair due to stress symptoms, many lose hair in their teens. Gel, shampoos and conditioners could be the source of this issue.
Vitamin D and vitamin E is what you should crave for, Eat coconuts do daily bases. And avoid hair lotions.
There are other options to such as hair transplant or hair powder that will temporarily cover your hair.
Go for natural resources first and make a sensible decision.