单宁酸在医药中用作收敛性的物质。

Tannin is an astringent substance used in medicine.

youdao

水杨酸有效消除肌肤炎症，收敛毛孔，提高肌肤的天然防护能力，从而抑制痘痘的生长。

Salicylic acid can effectively diminish inflammation, shrink pores, improve skin resistance and inhibit the growth of acne.

youdao

水杨酸有效消除肌肤炎症，收敛毛孔，提高肌肤的天然防护能力，从而抑制痘痘的生长。

Salicylic acid can effectively diminish inflammation, shrink pores, improve skin resistance and inhibit the growth of acne.

youdao