moisturification 

The process of becoming, or to cause to become, moisturized. Synonym with moisturization.

Adding lotion all over her body was certainly an act of moisturification.

moisturification by G. Thomas May 21, 2008

moistification 

The verb to make something "moistified"

Bob T-Mart: I'm dry
Gregory: You need some moistification!

moistification by Minho from the Maze Runner July 17, 2017