Please recommend a shampoo or supplement that is good for thinning hair and recovering from hair loss.

Hair also gets thinner as you get older.

Last year, while dieting and losing a lot of weight, my hair loss also worsened.

I've gained some weight back and need to go on a diet, but it's really not easy.

As my hair gets thinner, it looks even less dense.

My hair falls out easily.

I'm wondering if thinning hair is impossible to restore.

I'm wondering if hair loss is also irreversible.

I get stressed every time I see a handful of hair falling out while washing it.

Please recommend a shampoo or supplement that is good for restoring thinning hair and recovering from hair loss.