Zinc-Based Deodorant Finish for Sports Bras: Buyer Guide
Buyers sourcing medium support sports bras with real odour control usually ask the same five questions. Here is how we answer them for Zinc-Based Deodorant Finish.
How does it actually work
Zinc-Based Deodorant Finish relies on zinc oxide or zinc pyrithione chemistry. In practice zinc binds the fatty acids released in sweat before bacteria convert them into odour. If a supplier cannot explain the mechanism in one sentence, they are probably selling a fragrance that washes out in three cycles. The sweat zone for medium support sports bras is the underband and the centre front panel, which is where the treatment has to sit.
What target should I write
Write more than 80% reduction of ammonia and acetic acid in the test gas measured by ISO 17299-2 deodorant test. Naming the standard matters more than the headline number, because antibacterial results are not comparable across different test methods. Every lot is measured against ISO 17299-2 deodorant test before the fabric is released for cutting.
How long will it last
Expect 20 home washes under normal care. Ask for results after washing rather than only as delivered, and make the care label say wash at 30-40 degrees without fabric softener. Cost impact is USD 0.25-0.45 per garment, which is usually recovered through fewer returns across a season.
What does it cost
Budget USD 0.25-0.45 per garment. Against the cost of a returned garment and a lost repeat customer, that is a modest amount, and it is easier to defend than a price rise later. Wear trials were run under gym work, running and studio practice rather than in the laboratory alone.
How do I check a shipment
Take fabric from the bulk lot, not the sample book, and repeat ISO 17299-2 deodorant test. Keep the report with the shipment documents so any claim can be answered with data instead of opinion. The care label states wash at 30-40 degrees without fabric softener, and that wording is the condition behind 20 home washes.
