An InStyle writer shares her experience with the Rodan + Fields Densifying+ Treatment, a leave-in spray that made her hair ...

Oiling hair right after shampooing may do more harm than good—leading to buildup, dullness, and blocked absorption of ...

Just like hair gel, it had its moment, but in 2025, the best styling mousses (just like the best gels or pomades) are back in fashion—or should we say back in your hair.