The invention relates to a deep moisturizing compound and a preparation method thereof. The deep moisturizing compound consists of the following components in parts by weight: 0.05-1 part of
hyaluronic acid, 0.04-2 parts of transdermal
fibronectin, 0.06-4 parts of
ergothioneine, 4-40 parts of a dispersing agent and 5-60 parts of a
solvent. The preparation method of the deep moisturizing compound comprises the following steps: dispersing the
sodium hyaluronate and the
ergothioneine by using the dispersing agent according to the ratio, then adding the material into the
solvent, stirring the materials until the
sodium hyaluronate and the
ergothioneine are completely dissolved, finally adding the transdermal
fibronectin, and completely stirring the material to obtain the deep moisturizing compound. According to the deep moisturizing compound provided by the invention,
hyaluronic acid is used as a main functional substance for
skin moisturizing, meanwhile, transdermal
fibronectin is added to promote
permeation and realize deep moisturizing, and finally ergothioneine is used as an auxiliary material to improve and repair a
skin barrier and lock
moisture in
skin, so that comfortable skinfeeling can be provided, and skin health is facilitated.