Mid-to-high-end sweaters, with their high-quality fabrics, exquisite craftsmanship and fashionable designs, have become the darlings of many people's wardrobes. However, such sweaters are often made of delicate materials and are prone to damage if not washed and cared for properly. Mastering the correct washing and care methods and avoiding the pitfalls can keep sweaters in good condition for a long time. The choice of detergent is the first hurdle in personal care. Many people, for convenience, casually pick up ordinary laundry detergent or soap at home to wash mid-to-high-end sweaters. This is a big no-no. Most common detergents are alkaline. However, the fibers of materials such as wool and cashmere commonly used in mid-to-high-end sweaters are prone to damage in an alkaline environment, becoming rough and losing their luster