I have been on thyroxin for an underactive thyroid for virtually 20 years, the best you can hope for is asdas sell Dove extra body shampoo. I have always had fine hair, hairdressers in my teens and early 20s never failed to comment on it, I suffered more than most due to the Barbra Streisand way we Were curly perm look, my condition was not diagnosed until just after my third child was born and I felt like death warmed up, my hair was the least of my worries. After taking thyroxin since 1987, my hair has not changed and it falls out with every shampoo, I was advised to use Johnsons baby shampoo when I was first diagnosed, b