I know how you feel, I've had 5 years of hair thinning and I can't stand it anymore so I've been researching and researching.
The only thing I've done over 5 years is take a multivitamin, which obviously doesn't grow hair lol
I'm like you I go to the pool and get a bit of sunburning around the front line of my hair, it stinks right
Hopefully we can all find something to stop the shedding and grow hair back, I know I've read all over the internet different ways to, guess I just need to find what will work for me.