A liquid dispenser applicator for preoperative preparation of a target area of a patient’s skin is comprised of two integrated components, a handle portion and a canister vessel. An annular fixing portion extends from a bottom of the lamp holder and surrounds a periphery of the top end of the heat sink. The retainer has a pair of spaced ridges that engage the annular groove on the shank and a panel that extends across the distal end of the shank.