Bought for my waterproof nubuck caterpillar, this aerosol is doing its office. Of course it must be applied on clean shoes and outside because of the smell. It does not change the color of the shoes ordered laérosol being colorless. Drying the product is in 1 to 2 minutes. Depending on the time it must be applied every 1-4 months. An aerosol bought in 2013 made me 1 year, renewed control in 2014.
This spray is suitable for the maintenance of nubuck shoes that do not accept any product, however, the price seems high. Hence my rating to 4 stars.