3 in 1 High Frequency Laser Hair Therapy Hair Growth Comb scalp slimming Care Treatment Sprayer Machine Weight Reduce2019 New Arrival 3 in 1 Pro High Frequency Hair Growth Comb scalp Care Treatment Sprayer Machine Introduction Laser Hair Therapy is a non chemical, non invasive treatment that is being used commonly for the treatment of hair loss. Low level laser therapy is delivered by a device that contains paneles of lasers that shine on the scalp. It is high end laser hair loss treatment system, based on 659nm and 670nm low level diode laser technology.