Note that there’s some debate over whether hydrolyzed wheat protein is or isn’t gluten-free. In 2020 the FDA ruled that manufacturers must hold records confirming foods are gluten-free before ...

Sounds pretty perfect, right? The most common proteins you’ll find in hair products are “hydrolyzed wheat protein, keratin, and hydrolyzed keratin protein,” says Dr Ali Syed, founder of ...

Fact checked by Sarah Scott Switching to a gluten-free shampoo and other hair care products is not strictly necessary since ...