Its technique has been transmitted by the association for the preservation of techniques for making Hosokawa-gami until now and the technique of making Hosokawa-gami was designated as an important intangible cultural property in 1978.
細川紙技術保存会によって今日まで技術が伝承され、昭和53年（1978年）に、細川紙の製紙技術は重要無形文化財に指定されている。