There are plenty of answers to keep your jeans clean and now the denim fiends over at Heddels have a new detergent to handle your prized selvedge. Their Denim Wash is a plant-based solution made out of a soap nut extract that is able to clean and de-odorize, but is still mild and delicate enough to not do any damage to your jeans. Designed for dry and raw denim, washing only requires a teaspoon of the detergent and one bottle is good for 24 washes. 

$28, heddels.com