1. Cotton fabric: Cotton fabric has strong alkali resistance, not acid resistance, and good high temperature resistance. It can be washed with various soaps or detergents. Before washing, it can be soaked in water for a few minutes, but not too long to avoid damage to the color. Underwear should not be soaked in hot water to prevent the protein in the sweat from coagulating and adhering to the clothing, resulting in yellow spots. When using clothing detergent, the best water temperature is 40～50℃. When rinsing, you can master the "small amount and many times" method, that is, you do not need to use a lot of water for each rinse; but you need to wash several times. Wring dry after each rinse, and then perform a second rinse to improve washing efficiency. Clothes should be dried in a ventilated and cool place to avoid exposure to strong sunlight to fade colored fabrics.

2. Hemp fiber fabric: Hemp fiber is rigid and has poor cohesion. When washing, you should use lighter force than cotton fabrics. Never use a hard-bristled brush to scrub and rub vigorously to prevent the fabric from fluffing. Do not twist it with force after washing, do not soak colored fabrics in hot water, and do not expose to strong sunlight to avoid fading.　

3. Silk fabric: Before washing, soak the clothes in water for about 10 minutes. The soaking time should not be too long. Avoid washing with alkaline water, and use neutral soap, washing powder or neutral detergent. The bath liquid should be lukewarm or room temperature. After washing, gently squeeze the water and never twist it. It should be dried in a cool and ventilated place, not exposed to strong sunlight, let alone drying.

4. wool fabric: wool is not alkali resistant, so it should be washed with neutral detergent. Wool fabrics will shrink and deform in an aqueous solution above 30°C, so the washing water temperature should not exceed 40°C. The washing solution is usually prepared with room temperature water (25°C). Do not use a washboard to scrub while washing, that is, use a washing machine to wash, it should be "lightly washed", and the washing time should not be too long to prevent milling. Do not wring after washing, squeeze it by hand to remove water, and then drain. Half a minute is appropriate when dehydrating with a washing machine. It should be dried in a cool and ventilated place, and not exposed to strong sunlight to prevent the fabric from losing luster and elasticity and causing a decrease in fabric strength.

5. Viscose fiber fabric: viscose fiber has a large shrinkage rate and low wet strength. When washing, it should be washed and soaked, not long-term soaking. The viscose fiber fabric will become hard when exposed to water, so it should be "washed lightly" to avoid fluffing or cracking. Use neutral detergent or low alkaline detergent. The temperature of the washing liquid cannot exceed 45°C. After washing, fold up the clothes, squeeze out the water a lot, and never twist them. Avoid exposure to the sun after washing, and dry it in a cool, well-ventilated place.

6. Polyester fabric: soak in cold water for 15 minutes, then wash with general synthetic detergent. The temperature of the washing liquid should not exceed 45°C. Dirty parts such as neckline and cuffs can be scrubbed with a brush. After washing, rinse, twist lightly, dry in a cool and ventilated place, do not expose to the sun, and do not dry to avoid wrinkling after heat.

7. Acrylic fabric: Basically similar to polyester fabric washing. First soak in warm water for 15 minutes, then wash with low-alkaline detergent, rub and rub gently. The thick fabric is washed with a soft brush, and finally dehydrated or wringed out the water gently. Pure acrylic fabrics can be aired, but blended fabrics should be dried in a cool place.

8. Nylon fabric: first soak in cold water for 15 minutes, and then wash with general detergent (regardless of whether it contains alkali). The temperature of the washing liquid should not exceed 45°C. After washing, ventilate and dry in the shade, do not sun.　9. Vinylon fabric: soak it in room temperature water first, then wash it at room temperature. The detergent can be general washing powder. Do not use hot water to avoid expansion and hardening of vinylon fiber, or even deformation. Dry after washing and avoid sun exposure.