Denim is a very strong and durable material, that rarely breaks. However, it is very visible when denim is washed too often, as it loses its colour and gets a more worn look.
If your denim product is not visibly dirty, you can refresh your product by putting it in the freezer in a closed plastic bag for 24 hours.
Denim can give off colour and lose saturation - especially during the first few washes. Therefore, wash with products in similar colors.
To preserve the look and color of your denim product, you should wash it inside out.
Your denim product benefits from being dried outside, but to ensure it is not bleached by the sun, you should always dry it in the shade.