Metallic Hair Dyes Clairol Does Clairol Herbal Essences Hair Dye Contain Metallic Salts?

Does Clairol Herbal Essences Hair Dye contain metallic salts? - metallic hair dyes clairol

I'm going to bleach hair dye this weekend and the parts of the purple and blue. The directions say with certainty that I have not dyed my hair with hair dye and "metal". What does this mean? I Herbal Essences hair dye for a week ... and I will not subject my hair after the bleach or something ... Can anyone help? Thank you!