How to Wash Underwear Properly

Why Proper Underwear Washing Matters

Underwear is in direct contact with your skin all day and accumulates bacteria, sweat, and body oils faster than almost any other garment. Washing it correctly ensures it's truly hygienic — not just visually clean — and helps the fabric hold its shape and elasticity for longer.

Step 1: Wash After Every Wear

Underwear should be washed after every single wear, no exceptions. Even if it looks clean, bacteria and moisture build up quickly against the skin. This is especially important in warm weather or after physical activity.

Step 2: Sort by Fabric Type

Separate cotton underwear from delicate fabrics like lace, silk, or microfiber. Cotton can handle warmer water and a regular cycle; delicates need cool water and a gentle cycle (or hand washing).

Step 3: Use the Right Water Temperature

• Cotton underwear: Warm water (104°F / 40°C) kills bacteria effectively while being safe for most cotton fabrics
• Synthetic or delicate underwear: Cold water to preserve elasticity and prevent shrinking
• White cotton underwear: Hot water (up to 140°F / 60°C) for maximum sanitization

Step 4: Use a Gentle Detergent

Harsh detergents can irritate sensitive skin and break down elastic fibers. Use a gentle, fragrance-free detergent for everyday underwear. For delicate styles, Eucalan Fine Fabric Wash is an excellent no-rinse option that's gentle on both fabric and skin.

Step 5: Use a Lingerie Bag for Machine Washing

Tossing underwear loose in the washing machine causes elastic to stretch, lace to snag, and straps to tangle. Always place underwear in a lingerie wash bag before putting it in the machine. This protects the fabric and extends the life of your underwear significantly.

Step 6: Add a Laundry Sanitizer for Extra Hygiene

If you or someone in your household has been ill, or if you want extra peace of mind, add Lysol Laundry Sanitizer to the rinse cycle. It kills 99.9% of bacteria even in cold water, without bleaching or damaging fabric.

Step 7: Dry Properly

• Cotton underwear: Can go in the dryer on low to medium heat
• Delicate or lace underwear: Air dry flat or hang — dryer heat degrades elastic and delicate fabrics quickly
• All underwear: Make sure it's completely dry before storing to prevent mildew

Quick Tips for Clean, Long-Lasting Underwear

• Never skip washing after a workout — sweat accelerates bacterial growth
• Avoid fabric softener — it coats fibers and reduces absorbency
• Replace underwear every 6–12 months — elastic degrades over time regardless of care
• Hand wash delicate styles when possible for maximum longevity

Recommended Products

• Premium Bra Lingerie Wash Bags — protect underwear from snagging and stretching in the machine
• Eucalan Fine Fabric Wash — gentle, skin-friendly detergent for delicate underwear
• Lysol Laundry Sanitizer — kills 99.9% of bacteria without bleach, safe for all fabrics