resistant. When it wears off after a few seasons, the outer fabric of your shell layer will start to get wet even though the membrane will still keep water from passing through the garment. When this happens, you can re-apply the DWR with a wash-in product or a spray.Shop garment ...
For clothing you should wash with a technical cleaner and then either spray your reproofer on your garment or use a ‘wash in’ reproofer. Waterproof sprays tend to work best on clothing with a waterproof coating, whereas wash in proofers are more suited to those with a waterproof membrane....