许多护肤产品含有类视黄醇，有助于对抗痤疮并预防过早衰老。

Many skincare products contain ___retinoids to help fight acne and prevent premature aging.

医生建议使用维A酸衍生物来治疗我的顽固痤疮。

The doctor recommended ___retinoids to treat my stubborn acne.

这种面霜含有维甲酸，可以帮助改善皮肤质地。

This face cream contains ___retinoids that can help improve skin texture.