Nearly one third of men are bald, while nearly 30 million American women are losing some of their hair too. “Good Morning America” investigated an innovative new treatment that can help hide thinning hair, but what should you know before giving it a try? First of all, you should know that what you’re getting is not really a tattoo. It’s not cosmetic makeup either, although both of those were the jumping off point for this new invention. Good Look Ink, the company we profiled, calls it “Cosmetic Transdermal Hair Replication.” Other companies call it “Scalp Pigmentation,” and still more say “Cosmetic Hair Follicle Replication” or “micro hair technique.” So YOU don’t call it a “mistake,” here are some pros and cons to consider before getting one of these treatments.