Most of us know that protein is good for building muscles, repairing cells and helping us feel fuller for longer, but did you know it could also be the secret to stronger, healthier hair?
And it's now popping up in all kinds of haircare products as the latest miracle ingredient. It makes sense - hair is up to 95% protein but everything from dyeing to bleaching and blow-drying can cause damage and protein loss.
The thing is, although hair is made of protein, its dead. And when your hair is damaged from over-styling, bits of the outer layer - the cuticle - can break off. So putting protein (products) on top of protein (the hair) won't magically fix it and make it healthier. But what it will do is plug the gaps of damaged hair, making it appear smoother and shinier. It also acts as an intense mousturiser which can have a plumping effect making fine hair look thicker.
Protein hydrates and can help your hair grow stronger.
A quick Google search and you'll see protein-packed hair products have had a bit of a bad rep, with claims they can make hair brittle and dry.
The truth is, all hair is different and what we do know is these products are great for chemically damaged hair, so anyone who has dyed their hair or used straighteners or curling tongs will benefit from a hydration boost.
Click on the links for our favourite products to try for yourself:
Kiehl's Amino Acid Conditioner
Tresemme Keratin Smooth Shine Oil
John Frieda Luxurious Volume Core Restore Protein-Infused Clear Conditioner