A<unk>  is a thin surface layer that repels water. It is made from<unk>  (ultrahydrophobicity) materials. Droplets hitting this kind of<unk>  can fully rebound. Generally speaking,<unk> s are made from composite materials where one component provides the roughness and the other provides low surface energy. This image shows highly absorbent filter paper coated with a<unk>  paint developed at University College London. This repels water (which has been dyed orange for greater contrast)
Superhydrophobic coating
Surgical lubricant
Tooth polishing
Chemical peel
Dermal adhesive
Sterilization 
Paper cut
Socket preservation