The basic approach to taking care of jeans after they are bought is that they need to be per-soaked before wearing them. The jeans should be put on while getting into a bathtub filled with hot water. The water should not be very hot, because the hotter the water, the more the colour will run. Sit for an hour. Wearing jeans while they soak will optimize their fit as they conform to the body.
Another method is to turn the jeans inside out and put them in a bathtub with 4 inches of hot water and weigh them down so they stay below the surface of the water. Leave them for 1-2 hours. Carefully take them out and hang them upside down to dry. Wear them for about seven months without washing them. This will enhance and accelerate the fades and marks, depending on how often they are worn.
One might be worried about the cleanliness of wearing jeans for so long without washing. If they start to smell, fold them and put them in a plastic bag and stick them in the freezer. When taken out the jeans will smell fine. An alternative to freezing is to hang them up outside and let them air out in the sun.
When jeans are put in a washing machine, the cotton fibers in them contract or shorten. Wearing the jeans stretches the fibers out again. Continuous washing and wearing weakens the fibers and they eventually tear.
A high-quality pair of jeans for men that fits well is a rare and precious commodity. Anyone would want them to last as long as possible.
To remove any stains or soil that are gotten during the day, spot clean them with water and if necessary, a little soap. If the spot doesn’t come out put a drop of soap on the area and wash it again. For a tough spot, try a window cleaner or carpet cleaner.
Hang jeans up on a hook when not wearing them. Don’t leave them lying in a heap on the floor or tangled up with other clothes.