Magnesium Oil Body Spray, Better You (100ml). A commonly overlooked yet vital nutrient, magnesium is crucial for healthy bones as it makes up part of the skeleton’s framework. It’s presence in every cell of our body is essential and a deficiency is nothing short of disastrous for the cell’s life.. Our transdermal magnesium provides a fast and effective method of remineralisation.. How to use magnesium oil: Applied directly onto the skin, magnesium is quickly absorbed into the epidermis, through to the blood vessels and muscles beneath, completely bypassing the digestive system where many nutrients, including magnesium, are poorly absorbed.. You may check out our customers magnesium oil reviews below.