★★★★★
Their are many sources of Magnesium Chloride. Dr Carolyn Dean sells the pico magnesium form whereas Dr Sircus advocates the natural Zechstein (mined from the Earth containing other minerals) derived magnesium chloride form. Carolyn Dean's pico magnesium form is said to be better absorbed. She promotes magnesium brands such as ReMag. Dr Sircus promotes Ancient Minerals magnesium. Dr Sircus's magnesium chloride form is natural and contains many other minerals besides which are beneficial for the body. Also bear in mind that both Dr Carolyn Dean and Dr Sircus are probably being nicely paid to advertise that ReMag or Ancient Minerals are the best form of Magnesium Chloride to take. So its up to you to decide really
I bought my own magnesium chloride as a hydrated chemical powder in Thailand and make my own Magnesium Oil whenever I need it. I'm still using it after 5 years.