Thermal underwear is quite different from regular cotton undergarments. If not washed properly, it can damage the fibers and significantly reduce its lifespan. To maintain its quality and performance, it's important to follow the right washing techniques. Here are some key points to keep in mind:
First, thermal underwear should never be dry-cleaned. The best options are gentle machine washing or hand washing. This helps preserve the fabric and its insulating properties.
Second, always use water that doesn't exceed 40°C, ideally around 30°C. Hot water can cause shrinkage and damage the delicate materials used in thermal wear.
Third, choose a neutral detergent. Avoid using soap or any products containing bleach or whitening agents, as they can weaken the fabric. Also, don’t overdo it with detergent—too much can leave residue and affect the softness of the fabric.
Fourth, never apply detergent directly onto the garment. Instead, dissolve it in warm water (around 30°C–40°C) first, making sure it’s fully mixed before adding the clothing. This prevents concentrated spots that might harm the fabric.
Fifth, if your thermal underwear contains wool, it’s best to wash it in warm water with a mild, neutral detergent. Gently soak and scrub the garment, then rinse thoroughly. After washing, lay it flat in a cool, well-ventilated area to dry. Avoid direct sunlight, which can fade the color and weaken the fibers. If you prefer to hang it, use a padded hanger and place the sleeves on it to prevent stretching and deformation.
Lastly, for thermal underwear made from a blend of cotton and elastic fiber, it’s best to wash it separately by hand or in a gentle machine cycle. After washing, air dry it indoors or in a shaded outdoor area—never expose it to direct sunlight, as this can cause fading and damage to the elastic fibers.
By following these simple steps, you can ensure your thermal underwear stays comfortable, durable, and effective throughout the seasons.
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