An astringent substance causes the skin or other tissue to tighten.

an astringent cream 收敛膏

Astringent remarks are clever but unkind or criticize someone.

astringent criticism 尖刻的批评

her astringent wit 她那尖刻的诙谐

a drug or cream that causes the skin or other tissue to tighten

You can use an astringent to make your skin less oily. 你可以用收敛水来减弱皮肤的油性。