How often should I wash my jeans?

　　Jeans are made from special fabrics and manufacturing processes, and cleaning does not need to be as frequent as shirts and T-shirts. There is a saying commonly known as "raising cattle", which refers to not washing jeans, using the body's curves to polish solid-color jeans, allowing the pants to fade naturally, forming creases that fit one's body shape. So, can jeans really not be cleaned? If they need washing, how often is the most suitable?
　　Denim was invented over 150 years ago — and the question of how and when to wash the garments has been around for almost just as long.
　　150 years ago, mankind invented denim, and since then the question of how to clean denim garments has existed.
　　Though many people choose to never wash their jeans, Levi's design director Paul O'Neill personally shared that he washes them every "30 to 50 wears."
　　Although many people choose never to wash their jeans, Levi's design director Paul O'Neill shared that he washes them every "30 to 50 wears."
　　O'Neill told the Australian Financial Review that he recommends washing jeans alone on a gentle cycle with cold water so the color doesn't fade, and hanging them outside to dry — never tumble drying.
　　O'Neill told the Australian Financial Review that he recommends washing jeans alone on a gentle cycle with cold water so the color doesn't fade, and hanging them outside to dry—never tumble drying.
　　"The more you wash your denim, the lighter it will become, losing indigo with each wash," he said.
　　He said, "The more you wash your denim, the lighter it will become, losing indigo with each wash."
　　However, he explained that how often jeans should be washed is up to personal preference and there's no "official" way.
　　However, he explained that how often jeans should be washed depends on personal preference and there is no "official" guideline.
　　Rather than washing jeans, some people find other ways to freshen them up such as putting them in the freezer, spraying them with vinegar or hanging them in the sun for a "UV wash" to kill off bacteria, O'Neill said.
　　O'Neill said that some people don't wash their jeans, but find other ways to freshen them up, such as putting them in the freezer, spraying them with vinegar, or hanging them in the sun for a "UV wash" to kill bacteria.
　　Mary Lou Ryan, a co-founder of clothing Brand Bassike, goes a step further, saying she only washes her jeans when it's vital with a small amount of mild detergent.
　　Mary Lou Ryan, co-founder of the clothing Brand Bassike, goes a step further, saying she only washes her jeans when necessary, using a small amount of mild detergent.
　　Though if you prefer not to wash your jeans at all, a small dab of laundry spray on stains should do the trick.
　　However, if you prefer not to wash your jeans at all, a small amount of laundry spray on stains should suffice.
　　John Reid, managing director at clothing retailer Garment Quarter, told Yahoo UK, "Washing your denim jeans can alter the make-up of the material itself, and in fact, your favorite pair of jeans don't need to be washed as frequently as you may think."
　　John Reid, managing director of clothing retailer Garment Quarter, told Yahoo UK: "Washing your denim jeans can alter the composition of the material itself, and in fact, your favorite pair of jeans don't need to be washed as often as you might think."
　　Source: China Daily Website