Some can have hormone - like effects when applied to the skin and others can cause skin irritation. (verywellfamily.com)
I make magnesium oil (here is the recipe) and apply to the skin for best absorption and I also often take an oral supplement. (wellnessmama.com)
She gets her fix from a friend, mixing it with egg white and lavender oil before applying it to her skin which is ever so much brighter and fresher, she noted. (health.com)