L'oreal Oxydant Créme Vol 12, 3,75% hydrogen t.b.v. L'Oréal Majirel, Majirouge and Majiblond colorings. This oxidant cream is added to the hair coloring for an extra intense and shiny color. The Oxidant Cream is available in four strengths: 3.75%, 6%, 9% and 12%.