About a month ago my 4 year old and I started using the Doo Gro products. I wanted to try them because my daughter has really fine hair that doesn't seem to grow very fast. At 4 1/2 her hair is still only a shaggy "bob" above her shoulders. So I figured it wouldn't hurt to try them on both of us. I'm trying to grow mine out so any help I can get it good. And I'll say that after a month of using them almost daily I've been really pleased with what I've seen so far!