天てん然ねん保ほ湿しつ因いん子し

noun

natural moisturizing factor; NMF

Technical term in dermatology and cosmetics for substances naturally present in the skin that help retain moisture.

• 天てん然ねん保ほ湿しつ因いん子しは、角かく質しつ層そうの水すい分ぶん保ほ持じに重じゅう要ような役やく割わりを果はたす。

  Natural moisturizing factors play an important role in retaining moisture in the stratum corneum.