As a professional tin box manufacturer with over 15 years in the industry, we’ve seen too many retailers and tea brands lose product quality — and customer trust — due to poorly maintained matcha tins.   According to our client feedback data, over 37% of first-time buyers return for a reorder simply because their customers noticed better flavor retention in matcha stored in clean, well-maintained tins.   The takeaway? A matcha tin isn’t just a container — it’s a freshness vault. But only if you care for it correctly.   1. Empty Matcha Tins Should Always Be Fully Cleared Before Washing Leftover matcha powder may seem harmless, but the natural oils in tea can oxidize quickly, leaving behind a stale aroma.   For empty matcha tins, tap the tin upside down over a clean surface to remove all loose powder before introducing any moisture.   Our in-factory testing shows this reduces the risk of “flavor transfer” by over 60%.     2. Rinse Your Matcha Tea Tin Box with Lukewarm, Not Hot, Water Extreme temperatures can warp the tin’s protective food-grade coating, increasing rust risk.   For a matcha tea tin box, always use lukewarm water and avoid boiling water — it’s better for both the tin and your tea’s future flavor.   Competitor analysis shows that tins without coating damage maintain airtight performance 2× longer.   3. Use pH-Neutral Soap for Your Matcha Powder Tin Can Acidic or alkaline detergents can strip away the lacquer layer inside a matcha powder tin can, exposing the raw metal underneath.   We recommend using pH-neutral soap and a soft sponge to gently clean the surface. Avoid steel wool or abrasive scrubbers entirely.   4. Air-Dry Matcha Tin Containers Upside Down to Avoid Water Spots Trapped water in lids and seams is one of the leading causes of rust.   For any matcha tin container, invert it on a clean, dry cloth in a well-ventilated space.   Factory drying racks achieve a 99% dryness rate within 30 minutes — but at home, aim for at least 2–3 hours.   5. Store Cleaned Matcha Powder Tins in a Low-Humidity Environment Even the best-quality matcha powder tins can suffer from corrosion if stored in a damp kitchen cabinet.   Humidity below 50% is ideal. For bulk storage, we use silica gel packs to maintain dryness in wholesale shipments.     Manufacturer’s Insight: Why Proper Cleaning Protects Profit From a producer’s standpoint, cleaning affects more than hygiene — it directly impacts product shelf life, repeat orders, and brand reputation.   Our wholesale partners who follow our cleaning recommendations report fewer product complaints and up to 15% higher reorder rates compared to those who don’t.   Ready to Source Your Next Matcha Tin Solution? From compact 30g retail tins to large-capacity wholesale matcha tin containers, our designs are built for easy cleaning, corrosion resistance, and lasting freshness.   Browse our latest matcha tin collections, explore custom printing and sizing options, and see why global tea brands choose us as their long-term manufacturing partner.   Contact our factory team today to request samples or discuss your next packaging project.