12oz Magnesium Oil with ALOE VERA - LESS ITCHY - Made in USA - Get Healthy Hair & Skin and Sleep Better! || FREE eBook Included (New) With Mg oil you&#039;re getting<span class="a-text-bold">100% absorbable</span>elemental mg delivered directly to thecellular level through yourskin. Magnesiumoxide based supplements have one of the lowest degrees of bio-availability, with as little as 4-10% of magnesium beingabsorbed by your body. Mgsupplements also have a negative effect on your digestive system, leaving you with an upset stomach and/or laxative side effects.