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Product Questions

Common questions about our fabric and underwear styles, including style comparisons.


What fabric are Mineral Undies made of?

Our lining fabric is a unique blend of TENCEL™ Lyocell and smartcel™ sensitive with natural mineral, zinc oxide. TENCEL™ Lyocell fibers are biodegradable, come from Eucalyptus trees, and are produced in a sustainable closed-loop process with a 99.5%

Why zinc oxide?

The permanently embedded zinc oxide found in smartcel™ sensitive improves the fibers' resistance to odor and infection-causing bacteria, which grow abundantly in synthetic fibers. This may reduce your exposure to bacterias linked with vaginal infecti

How long does the zinc last for?

We have tested our undies in third party labs, and efficacy of the zinc oxide remains strong even after 100+ washes.

How should I wash my Mineral Undies?

Our natural and zinc-infused fibers are more sensitive to being damaged by tumble drying. We recommend washing with like colors in cold water on a gentle cycle, and hanging or laying flat to dry. You do not need to use hot water in order to kill bact

Style Comparison: Cheeky vs. Bikini

Style Comparison: Thongs

Style Comparison: Brief vs. Boxer copy