Solid rest contributes to lusher hair too. “Sleep is necessary for proper protein synthesis in the production of hair strands as well,” Dr. Bowe explains. “And it can impact your hormones, which will also have an effect on your hair’s growth and appearance.” To get softer, heathier hair while your doze, try smoothing one of the new no-residue deep conditioners meant to be worn overnight all over damp or dry strand before bed once or twice per week. GH Beauty Lab pick: Paul Mitchell Lavender Mint Overnight Moisture Therapy, $20, Ulta
