Question: I want to increase eumelanin production while decreasing pheomelanin

Is it possible to increase eumelanin production in the human body, while decreasing pheomelanin production? I am one of those “fortunate few” born with mutations in MC1R (a.k.a. red hair, fair skin, freckles, & hating it), along with being a top contender for Basal Cell Carcinoma, Squamous Cell Carcinoma, and Melanoma.