Keywords: chemical depilation; chlorhexidine gluconate (CHG); colonization; draining sinus preparation; hair clipping; hair removal; impermeable barriers; incise drapes; iodine paint; isopropyl alcohol; povidone iodine; preoperative bathing; preoperative skin cleansing; repeat skin cleansing; shaving; skin preparation; sterile stockinette; surgical drapes; surgical limb preparation.