The temperature at which you should wash your jeans depends on the care instructions provided by the manufacturer and the type of jeans you have. In general, most jeans can be washed in cold or warm water, and it's usually recommended to avoid hot water for washing jeans.
Cold water washing (temperature around 30°C or 86°F) is often preferred for several reasons:
Color preservation: Cold water helps retain the color of the jeans and prevents fading, especially for dark or colored denim.
Fabric protection: Hot water can break down the fibers in denim and may lead to shrinkage and loss of shape.
Energy efficiency: Washing with cold water is more energy-efficient, saving on electricity costs and reducing the carbon footprint.
Environmentally friendly: Cold water washing requires less energy and may be more eco-friendly.
However, if your jeans are heavily soiled or you need to sanitize them due to specific reasons (like a medical condition or exposure to contaminants), you can use warm water (around 30°C to 40°C or 86°F to 104°F). Hot water is generally not recommended, as it can cause damage and shrinkage.
Always check the care label or the manufacturer's guidelines that are typically found inside the jeans before washing. If the care label specifies a particular water temperature, follow those instructions to ensure the best results and to maintain the quality of your jeans over time.