Type: Humectant Good for ... Dr. Gohara recommends shea butter as an occlusive layer to lock in hydration and prevent water water loss, thanks to lots of fatty acids. It comes from the nut ...

Strange but true— common ingredients known as humectants like glycerin and alpha ... to sweat a lot and they don't do well with heavy occlusive products. Petroleum jelly is a very good occlusive ...