Moisturizers help to treat your skin when it's dry and prevent it from drying out again. Moisturizers do this by holding water in the stratum corneum, the outermost layer of the skin but they have other functions as well.
Lightweight hydrators protect, refine and soothes the skin in seconds. It helps reprogram the skin to hold more moisture where it is needed the most. Hydrators deliver continued burst moisture that lasts for hours.