Dì / yī / cì / shǐ / yòng / guǒ / suān / chǎn / pǐn / shí / yīng / gāi / xiān / zuò / jú / bù / cè / shì

第一次使用果酸产品时，应该先做局部测试。

When using an alpha-hydroxy acid product for the first time, you should test it on a small area first.