(名詞/不可數) 藝術品粉刺 － 畫作表面因化學反應產生小凸塊所受到的損壞。
引句：
Some of the world’s finest oil paintings have been self-destructing, developing mysterious lumps and bumps known as “art acne”. Works by Georgia O’Keeffe and Rembrandt are among the hundreds of works blighted by the condition. For decades, art conservators have struggled to control the outbreaks, which look like grains of sand to the naked eye.
[dailymail.co.uk, 17 February 2019]
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