Cleans and revitalises insulation and restores the water repellency of hydrophobic down clothing and sleeping bags. It will also improve the water repellency of regular (untreated) down and maintain the water resistance of the down items outer fabric.
Dirt attracts water and conventional household laundry detergents attract hydrophilic residues leading to the Durable Water Repellency or DWR of the fabric and down becoming compromised and therefore wetting out.
Relatively new down filled clothing and sleeping bags cleaned with Nikwax Direct Down Wash will benefit from a revitalised insulation and a restored DWR through removal of dirt and other containment's. However once thouroughly used you will need to add DWR using Nikwax Down Proof after cleaning with Down Direct Wash. This will add DWR to the outer fabric of the gear and also the down fill itself.