The Japanese noun 'ティッシュ (tisshu)' refers to a 'tissue', typically the kind used for personal hygiene, such as facial tissues or paper handkerchiefs. This word is a loanword from English, and it is commonly used in everyday situations, especially when referring to tissues used for blowing one's nose or cleaning up small spills. For example: Can you pass me a tissue?「ティッシュを取ってくれますか?」(てぃっしゅをとってくれますか?). I always carry tissues in my bag「私はいつもバッグにティッシュを持っています」(わたしはいつもばっぐにてぃっしゅをもっています). Note that 'ティッシュ' is often used in casual conversation, and it is understood by most Japanese speakers.