L.O.C is an acronym for Liquid, Oil, Cream. So if it seems that your hair never keep hydration, this processus is THE thing to do for maintaining hydration for days.
LOC method consists in stacking layers of products. The product of the top sealing the product of the bottom. A liquid is applied in the first one, then the oil will be applied to seal the liquid and finally the cream will be applied to seal the oil.
Certain people use the method L.C.O (liquid, cream, oil).
Finally, the method L.C.O.C.B (liquid, cream, oil, cream, baggy) is the most complete in a case of more dry or damaged hair