astringent

synonym: adstringent
https://doi.org/10.1351/goldbook.15486
  1. adj., Causing contraction, usually locally after topical application.
  2. n., Substance causing cells to shrink, thus causing tissue contraction or stoppage of secretions and discharges; such substances may be applied to skin to harden and protect it.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1172 [Terms] [Paper]