research Ascorbigen Induces Dermal Papilla Cell Proliferation in Vitro , but Fails to Modulate Chemotherapy-Induced Alopecia in Vivo 2 citations , March 2013 in “Phytotherapy Research” Ascorbigen increases hair cell growth in a lab setting but does not prevent hair loss from chemotherapy in mice.
research BIOCHEMICAL AND HISTOCHEMICAL STUDIES ON WHITE, BROWN AND BLACK SKIN REGIONS OF THE GUINEA PIG 2 citations , January 1973 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Brown skin in guinea pigs has more ascorbic acid and related enzymes, black skin uses ascorbic acid well, and white skin has the most protein.