Alma’s proprietary Super Hair Removal (SHR™) technology gradually builds the energy being delivered for comfortable and effective treatments. SHR™ can be used in three different ways: SHR™ in motion – constant movement of the applicator over the skin for fast and safe hair removal over large areas. SHR™ STACK – safe, stationary, multiple-pulse delivery of energy for small areas, such as the face and bikini line. HR classic – stationary delivery of energy in one pulse.