Astringent is a term used to describe a substance that has the ability to shrink or constrict body tissues. It is often used in medical and cosmetic treatments, such as in the treatment of acne or to reduce inflammation. Astringents are also used in food preparation, such as to preserve fruits and vegetables. The term 'STYPTIC' is another word for astringent, and it is derived from the Greek word 'styphein, ' which means 'to contract.'