Thin or Fine Hair
You have: Thin or fine hair
You need: A volumizing or thickening shampoo. Because heavy products flatten fine hair, steer clear of gels and pomades. Your best friend for creating a thicker-hair look is going to be the stuff you wash it with.
You should try: "ManCave makes a great shampoo that stimulates the roots and helps strengthen the hair follicles," Serafino says. (ManCave Caffeine Shampoo, $10.50, mancaveinc.com) Another good bet: American Crew Hair Recovery + Thickening Shampoo ($14, groominglounge.com), which contains glycerin to build up hair strands, and tea tree and coconut oils for softness and shine. Also, consider a collagen treatment — a concentrated serum that you work through your hair post-shower. "Collagen plumps up existing hair, but it also penetrates the scalp, helping new hair grow in stronger," says Butterworth. Try Roy Teeluck Concentre de Collagene, ($55, royteeluck.com).
Expert tip: Men with thinning hair should keep their sides trimmed short. Trying to make up for the balding spot on top with extra length on the sides is a big mistake, says Serafino: "You are just drawing attention to what's missing."