Should You Wash Your Blue Jeans?
Denim can be divided into two categories: washed and raw. Washed denim is described as washed after it has been dyed, which makes the fabric softer and reduces shrinkage. The distressing on washed denim is artificial to give it a more worn-in look before getting worn-in. Raw denim fades naturally over time depending on the activity of the wearer. The longer you go without washing raw denim, the more worn and personalized they will appear. Advice on washing your jeans is varied. Basically, not washing your jeans will preserve the indigo, preserve a stiffness in the material, and make wear lines more pronounced. Really, it's up to you and your preference when it comes to washing or not washing your jeans.
from Brain Stuff
Key Facts In This Video
The blue shade of blue jeans comes from a dye called indigo. (0:53)
The FBI analyzes denim patterns when tracking criminals. (1:11)
Levi's recommended freezing your jeans to kill bacteria, but that won't actually work. (3:17)