We always recommend to “wear as much as possible, wash as little as possible”. The more you wear your jeans, the better they will look.
Following this principle and washing your jeans after 6-8 months of wear should already show some nice fadings and strong character. However, we aren´t too dogmatic on this. If you need or feel like washing your jeans before that time, do it without regrets.
Wash the jeans inside out in cold temperature or in 40ºc maximum, without using any bleach or chlorine chemicals.
Do not tumble dry the jeans as it can damage some of the materials. Hang dry them instead, as it will also avoid the need of ironing.