This is one of the better small handheld red light therapy products available on Amazon for use at home. It is the only I've found that includes the deeper penetrating 940nm wavelength.  This no where near the power and penetration of the Companion laser we use in hospital, but it's an excellent at-home option for more superficial things. This is an Amazon Affiliate Link. If you purchase using this link, I recieve a percentage, but you do not pay more.