But what about gentler, at-home keratin hair products? You don’t have to be a haircare whizz to have heard of keratin – it’s an ingredient that we’ve long seen stamped on product bottles.

Virtue’s hair care staples are marked down during Amazon’s Big Spring Sale. Shop the Jennifer Garner-used brand’s products ...

Fact checked by Nick Blackmer Step aside, oral supplements. Biotin now comes in shampoo form, and it claims to nourish the scalp and hair and make locks thicker and stronger. “The theory behind biotin ...

Strengthening hair follicles with ingredients like keratin will also help hair look fuller ... Hims continues to be one of our go-to brands for men's self-care and wellness. This well-reviewed ...

While I've been a fan and an avid user of Virtue's hair care products for years now — all of which contain the brand's proprietary alpha keratin 60ku protein — none have made quite as big of a ...