Massage moisturizer into the skin. In Vogue, Moss used Cosmoss Face Cream and described it as very healing; the article says it was infused with oat moss and CBD and delicate enough that friends with eczema could use it.
Because Cosmoss is no longer available, this links a similar current rich cream from La Roche-Posay, a brand Moss is source-linked to through her sunscreen, while preserving the original product Moss used.