防晒 functions as both verb ('to sun-protect') and noun ('sunscreen', short for 防晒霜). Full forms: 防晒霜 (cream), 防晒喷雾 (spray), 防晒衣 (UV-blocking clothing).
culture
East Asian beauty standards heavily favor pale skin, so 防晒 is a year-round obsession — umbrellas, face masks, full-sleeve UV gloves are common on sunny days.