Precision cut crystals are NOT easy to find. The retail market is saturated with Corrundum Crystals that are dull and round with the highest amount of aluminum base that the FDA will allow before they deem it unsafe. Sharp and clean crystals take time to process. When the crystals are crushed during processing some of the aluminum base which is formed in the crystals is crushed into each particle. Scientists study the long term effects of high doses of aluminum particles in the skin and found some unsettling conclusions. Some of these finding included Alzheimer's disease and other neurological disorders. They immediately set forth a minimum guideline to follow on the purity of Corrundum Crystals for medical dermabrasion. This caused a division in the industry. Some manufacturers were willing to create the safest crystals possible, and began to devise methods of purifying them of the impurities. What they discovered was REMARKABLE. The MORE THEY processed the crystals, the sharper and more defined they became!! Suddenly the process they were going through for the health of the consumer, became a trademark Phenomenon!!
MANY have even compared this process to DIAMOND POLISHING!!
So in short, there are TWO types of corundum resurfacing crystals. Cheap grey crystals that are dull and loaded with aluminum flake and PURE ALUMINUM OXIDE FREE 140 GRIT CUBED PRECISED RESURFACING CRYSTALS. Which one would YOU want to use on your skin!!?!!