was at the top of many lists. “You get significant benefits with very little downside,” Dr. Schultz says. First, your blood is drawn and spun in a centrifuge to separate the PRP, which is then injected all over your scalp. “Using your blood’s growth factors to stimulate collagen and follicles lets your own body work its magic,” says dermatologist Mona Gohara, M.D.
Another new option is a laser called Lutronic KeraLase ($750 to $1,000 per treatment), which is paired with a synthetic growth factor serum. The device stamps across your scalp, stimulating the area and creating tiny channels in the follicles, where the serum is then applied. “It delivers active ingredients where they’re needed,” says dermatologist Jeanine Downie, M.D. “The serum can contain even more growth factors than a person’s own PRP, plus stem cells to help hair growth,” she says.(Buy It, $79