Questions about: Microdermabrasion

What are corundum crystals?

Corundum is an aluminum oxide mineral from which the gemstones ruby and sapphire and the abrasive material emery are made. Next only to the diamond, it is the hardest natural known substance. Corundum is an inert substance, lacking in active properties (chemically). Each manufacturer will have the MSDA analysis available for consumer review.

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