Shop celebrities' favorite Olaplex hair products, from shampoo to conditioner. Plus, celebrity colorist Tracey Cunningham shares why stars like Kim Kardashian and Jennifer Lopez love the line.

Olaplex, a beauty brand favored by TikTok and Instagram influencers, sells hair products that dozens of customers allege caused “serious injury,” according to a lawsuit filed last week.

Olaplex is losing ground with hairstylists, a key source of new customers for hair care products. The brand's sales through stylists fell 61% during its second quarter, which ended in June.

The Olaplex No. 4 Bond Maintenance Shampoo and No. 5 Bond Maintenance Conditioner are part of the brand’s signature hair care line, which has gone viral due to its ability to repair and protect ...

Women claim in a lawsuit Olaplex's range of products, numbered 0 through 9, contain allergens and irritants that caused hair loss and other problems, including contact dermatitis and brittleness.

If your hair feels particularly dry after the past few months of winter weather, you're not alone. But whether get dry skin, dry scalp or both, I've found one product that I swear by to ease the shock ...

Olaplex has another leave-in product, the No.6 Bond Smoother, which also aims to hydrate and smooth the hair, but it’s more of a styling cream that hones in on frizz control and definition ...