I finally received my order of Ancient Minerals magnesium oil. I have been sleeping horribly and I hope this is going to help. For those who use magnesium oil and find it helpful, I have a few questions. Do you wipe the oil off after 20-30 minutes or just leave it on? How much do you put on each day? What time of day do you use it? Do you put it on right before bed or earlier? Any other tips? Thank you so much.