Researchers say the secret to why humans grow such long scalp hair is a hidden 'molecular switch'. That means treating hair loss could be as 'simple' as finding a way to flick that switch back on.

Hair expert Bridget Amy tells Vegamour that if your chemical relaxer is too harsh or left too long, it could mean permanent .

We've rounded up the key hair growth vitamins you need to add to your diet if you yearn for long, luscious locks ... during the holiday season. Vitamins do many amazing things for hair: They ...