How to wash UPF clothing?

A Step-by-Step Washing Guide 

 UPF (Ultraviolet Protection Factor) clothing is specially designed to block harmful UV rays, but its protective ability can degrade with improper washing. Follow these steps to preserve its UPF rating, fabric quality, and longevity. 

1. Check the Care Label 

First   Always start with the garment's care label—this is the most accurate guide for that specific piece. It may include: 

     - Water temperature limits (most UPF clothing recommends cold or lukewarm water, 30°C/86°F or below). 

     - Whether machine washing is allowed (most are, but some delicate styles may require hand washing). 

     - Prohibitions (e.g., "Do not bleach" or "Do not tumble dry"). 

2. Pre-Treat Stains Gently 

 Avoid harsh stain removers, as they can break down the UPF coating and fabric fibers. Instead: 

     - Blot fresh stains (e.g., sweat, sunscreen, dirt) with a clean cloth to absorb excess. 

     - Mix a small amount of mild, fragrance-free detergent with cold water, and dab the solution onto the stain. 

     - Let it sit for 5–10 minutes (do not scrub vigorously—this can damage the fabric's UV-blocking layer). 

3. Choose the Right Detergent 

 Harsh chemicals, fragrances, and fabric softeners are enemies of UPF clothing: 

 Use Mild, liquid detergent (free of bleach, enzymes, or optical brighteners). These are gentle on the UPF coating and won't leave residue. 

  Avoid 

    - Bleach (chlorine or oxygen-based): it destroys the fabric's UV-protective fibers. 

    - Fabric softeners or dryer sheets: it will coat the fabric, reducing its breathability and UPF effectiveness. 

    - Powdered detergents: May leave gritty residue that wears down the fabric over time. 

4. Machine Wash Properly 

If the care label allows machine washing:  

Load: Wash UPF clothing with similar lightweight, colorfast items (e.g., other activewear or swimwear). Avoid mixing with heavy fabrics (like jeans) that can rub and damage the UPF layer. 

Cycle: Use the delicate or gentle cycle—this minimizes friction and agitation. 

Water Temperature: Stick to cold or lukewarm water(never hot). Hot water shrinks fabric and breaks down the UPF coating.  

Detergent Amount: Use half the recommended amount (excess detergent leaves residue that reduces UV protection). 

5. Hand Wash for Delicate UPF Garments 

 For delicate styles (e.g., UPF hats, baby UPF clothing, or lightweight shirts): 

     - Fill a basin with cold water and add a small amount of mild detergent. 

     - Submerge the garment and gently squeeze the water through (do not twist or wring—this stretches fibers and damages UPF). 

     - Rinse thoroughly with cold water until no soap suds remain. 

6. Dry Correctly (Avoid High Heat) 

Heat is one of the biggest threats to UPF clothing—never use high heat to dry: 

   - Air-Dry (Best Option): Lay the garment flat on a clean towel or hang it on a clothesline in a shaded area. Avoid direct sunlight while drying, as prolonged UV exposure can weaken the UPF coating over time. 

    - Tumble Dry (If Allowed): Use the lowest heat setting and remove the garment immediately when dry. Do not over-dry—this makes fabric stiff and reduces UPF effectiveness. 

7. Additional Tips to Preserve UPF 

    - Avoid Ironing: Most UPF clothing is wrinkle-resistant; if ironing is necessary, use the lowest heat setting and iron inside out (direct heat can damage the UPF layer). 

    - Store Properly: Fold UPF clothing neatly or hang it in a cool, dry closet. Avoid storing it in damp areas (mold can grow and break down fabric). 

    - Replace When Needed: Over time (usually after 50+ washes, or if the fabric fades/rips), the UPF rating will decrease. If the garment no longer feels smooth (e.g., it's stiff or has a fuzzy texture), it's time to replace it for adequate UV protection.   By following these steps, you'll keep your UPF clothing effective at blocking UV rays while extending its lifespan.