1) Cotton fabric
Cotton fabrics are resistant to alkali, acid and heat, and can be washed with a variety of soaps or detergents. It can be soaked in water for a few minutes before washing, but it should not be too long to avoid color damage. Intimate underwear can not be soaked in hot water, so as not to make the protein in the sweat stain solidify and adhere to the clothing, and yellow sweat spots will appear.
When washing with a detergent, the optimum water temperature is 40 to 50 °C. When rinsing, you can master the "small number of times" method, that is, not every water rinse does not use a lot of water; but it should be washed several times. After each rinse, it should be wrung out and then rinsed a second time to improve the washing efficiency. Dry clothes in a cool, ventilated place to avoid exposure to sunlight and fading of colored fabrics.
2) Hemp fabric
Hemp fiber is hard and has poor cohesion. It is lighter than cotton fabric when washing. Do not use hard brush and force to avoid fluffing. After washing, it can't be twisted by force. Non-colored fabrics should not be boiled in hot water. It should not be exposed to sunlight to avoid fading.
3) Silk fabric
Before washing, soak in water for about 10 minutes, soaking time should not be too long. Avoid washing with alkaline water, use neutral soap or soap tablets, neutral detergent. The lotion is preferably mild or room temperature. After washing, gently squeeze the water and avoid twisting. It should be dried in a cool and ventilated place. It should not be exposed to sunlight, and it should not be dried.
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