Several companies sell handheld low intensity lasers for use in the home that are supposed to stimulate hair follicles, causing regrowth of lost hair. The lasers are usually used for between and 10 and 15 minutes three times a week. They typically cost several hundred dollars.

Many doctors, while stating that low level lasers are safe to use, are skeptical of the hair growth claims made about these products. However, one study found that one of the products did indeed result in hair growth. The study showed that the HairMax product resulted in a 7 percent increase in hair density after 26 weeks of use.

Still, many doctors think that the advertising showing clients with a full head of hair is misleading, and believe that very little if any hair growth can be achieved using these products. Some doctors admit that the products can grow hair, but not for everyone and that the results take at least 6 months, and tend to be modest.

There is one FDA approved laser hair product, the LaserComb. A company funded study found that the LaserComb increased hair density by 14% over baseline. Thus far, the only side effects reported with the use of hair laser products is itching and tingling of the scalp.