Our crystals come with M.S.D.S., safety data sheet ISO and are FDA approved. We offer Virtually Dust-Free Crystals. This is accomplished by a Multiple Layer Screen Sifting process, which is then dusted by a dual stage air-wash system and bottled with a gel-pillow moisture pack and sealed cap. The crystals are for use on all Micro-Dermabrators that use grit #90, #100 & #120 (Sizes #150-180 are not totally dust free).