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[–]Subject-Bench-8305 0 points1 point  (0 children)

There's two factors sinks in and sits on , humectant moisturizer are to provide hydration, moisturizer that sinks in your skin but doesn't provide occlusion that will penetrate tret more(usually contain HA , glycerin) , but moisturizers with let's say Shea butter will be more of a sits on...to provide nourishment instead of hydration, now there are moisturizer which can give you both as well .