Covering the gray feels great, but if you use the wrong DIY product you can leave lead residue behind, on your hair, hands, and bathroom fixtures and appliances. Go natural, or find safer hair dyes in EWG’s Skin Deep cosmetic database.
With everything we know about how toxic lead is, it’s hard to believe some companies still use it in DIY hair dye (look for "lead acetate" on the ingredient list). Residues left in your bathroom can end up on your family’s hands. Lead can cause permanent deficits in learning and behavior when exposures happen during pregnancy and early life. It’s not worth the risk.