Conventional commercial hair dyes form potent allergens and may also have irritant properties. If they were not already well established in the market and the side effects tolerated by consumers they would likely be deemed unsafe for use. Disclosed are compounds, compositions, formulations and methods for reducing, avoiding or eliminating allergic contact dermatitis reactions to conventional commercial hair dyes that comprise an acid buffering system. The said buffering system may be used in a pre- or post-treatment before or after application of the hair dye.