Can clothing zippers and hardware contain heavy metals?

Yes, metal components in clothing including zippers, snaps, rivets, buttons, and grommets can contain heavy metals such as lead, cadmium, nickel, and chromium. Lead is particularly concerning in children's clothing hardware, as it is a potent neurotoxin. Nickel is the most common contact allergen from clothing hardware, causing allergic contact dermatitis in approximately 10-15% of the population.

Fast fashion brands with less rigorous quality control have been found with elevated heavy metal levels in their hardware and decorative elements. The metals can transfer to skin through direct contact, especially when combined with sweat which accelerates corrosion and metal ion release. Belt buckles, jean rivets, and decorative snaps that press against skin are common trouble spots.

GOTS and OEKO-TEX certifications include testing for heavy metals in all components of a garment, not just the fabric. When buying clothing, especially for children, look for these certifications or choose brands that explicitly test for heavy metals. ONDU's partner brands meet these standards across their entire product, including hardware and trim.