Bandage-like patch dissolves to deliver medicine to skin

Water-soluble material helps send complete drug dose into the body

OUCHLESS INJECTIONS  A water-soluble backing helps flexible drug-delivery  patches dissolve away and inject a complete dose from medicine-filled  microneedles (red spikes) into the skin.

K.A. Moga et al/Advanced Materials 2013

A few drops of water can make drug-delivering patches melt away from the skin.