i can remember doing this when i was a young teenager, it was always being featured in beauty tips columns in JACKIE magazine:lol:
you had to put it on and then sit in the sun to activate it. i do remember a slight change, but nothing all that noticable. one of the other things they used to recomend was conditioning your hair with egg yolk, you had to be real careful that the water wasnt too hot when you rinsed it out or you'd end up with your hair full of scrambled egg !:lol:
i bet other geeks of my era will have done the same.