I'd like to hear about the effectiveness from those who have tried gray hair shampoo.

As I get older, I'm starting to see a few gray hairs.

It's not very visible when her hair is down.

I noticed a few things when I tied my hair up. I inquired about dyeing it at the hair salon, but

They said it's not time to dye it yet.

While looking for another method

I found out that there is gray hair shampoo.

Has anyone tried gray hair shampoo?

I heard there are some side effects.

I'm curious to know how effective it was for you.