You’d be hard-pressed to find a guy who doesn’t want to keep the hair he has—or get back some of what he’s lost. And we all want it to look as full and healthy as possible. There are a lot of solutions out there: minoxidil and finasteride, PRP, hair growth supplements, and laser caps. But some are more supplemental in nature, and laser caps largely fall into that category. That’s not a knock on them — I’ve been using one for the better part of a decade and consider it essential to my routine — but it’s about knowing what expectations to set for different parts of your hair-retention and hair-maxxing goals. Low-level laser therapy, or LLLT, is the clinical name for these diode-based devices, and as NYC dermatologist Dr. Robert Finney (founder of Soho Skin and Hair Restoration) puts it, the key word in low-level laser therapy is low. Still, despite some measured..