Table tabulates the correlation between the skin supersolidity and the droplet functionality. The extraordinary catalytic capability, chemical reactivity, elastic adaptivity, hydrophobicity, hydrovoltaicity, sensitivity, and thermal stability of water droplets arise from the skin HB relaxation and polarization, following the HBCP and the BOLS-NEP regulations. For instance, the bond relaxation in length modulates the mass density and thermal diffusivity; the vibration frequency shift modulates the Debye temperatures and the specific heat; the H-O bond contraction deepens the O1s level energy and polarization reduces the bound energy of the hydrated nonbonding electron. The self-electrified surface takes responsibility for the catalytic capability, chemical reactivity, hydrophobicity, and the hydro-voltaicity. The O:H attraction and the O:⇔:O repulsion make the O:H-O highly elastic and repellency for super-elasticity and lubricity. The skin supersolidity is responsible for the tough skin of water and the slipperiness of ice , as well as the phenomenon of warm water faster cooling - known as the Mpemba paradox . The high thermal diffusivity of the supersolid skin enhances heat transport outward the warm liquid .