We all need magnesium every day. It is estimated 75% of the US population are deficent. Most of us are not getting it through our diet. This deficiency can cause a number of problems within our body. Some people take an oral magnesium supplement but it isn't readily absorbed by the body and can also cause stomach upset. Transdermal application of magnesium has been shown to have effective absorption and is suitable for everyone (even babies) because your skin will only absorb what it needs.
Magnesium promotes relaxation and sound sleep but that doesn't mean you can only take it at night. It is also essential for energy production on a cellular level so it can be applied at any time of day. Use it before a stressful day, after a work out, when you feel tension, sore muscles, headache, cramps ect.
Magnesium Chloride is also antibacterial and some people find relief from eczema, acne and to help speed up the healing of wounds. (Some burning may occur)