Do keratin supplements work to improve your nails, skin, and hair? A dietitian put them to the test for 30 days to find out.

While plant-based hair color is generally gentler, its performance and longevity depend on the specific formulation and your hair type. High-quality organic dyes often include natural oils, proteins, ...

and color-treated tresses. "It really rebuilds your hair," Taylor says. Its sulfate- and paraben-free formula—which is spiked glycerin plus smoothing keratin, vitamin-loaded ginger root ...

Sulphate-rich formulas can strip the hair of its natural oils (and the keratin treatment) shortening your results. Keep your shine for longer with Color Wow’s Dream Coat. This genius heat ...