Always Wash Before You Re-proof – Here's Why
By TaVare · updated 2026-07-27
The most common mistake with proofing is skipping the wash. New water-repellent treatment does not bond to dirt, body oils or detergent residue – so if you proof a dirty jacket, you waste both the product and your time. Here is why, and how to wash correctly first.
Why a dirty jacket cannot be proofed
The proofing (DWR) has to bond to clean fibres to lie evenly and bead water. Dirt, body oils and detergent residue form a layer between the fabric and the product, so the proofing bonds poorly and unevenly. A clean jacket takes the treatment; a dirty one does not.
Wash correctly first
Use a wash made for technical garments, and avoid anything that leaves a film.
- Close zips and hook-and-loop fastenings, and empty the pockets.
- Wash with a technical wash – not ordinary detergent with additives.
- Skip fabric softener entirely: it clogs the pores and counteracts the proofing.
- Run an extra rinse to clear all residue before you proof.
Then you proof
On a clean jacket you can use wash-in (in the machine) or spray (on the outside), then activate with a little heat – a short tumble on low heat or ironing with a cloth in between. See the separate guide on re-proofing a shell jacket for the details.
Never use fabric softener
Fabric softener is proofing's worst enemy. It forms a film, clogs breathability and stops the DWR from bonding. Always use a technical wash for shell garments.
We wash and re-proof in the right order
If you would rather not do it yourself, we clean and re-proof the jacket according to the garment and its care label – in the right order, with the right products. You order online, and you see the price before you order.
Frequently asked questions
Do I really have to wash the jacket before proofing?+
Yes. Proofing does not bond to dirt or detergent residue, so proofing a dirty jacket wastes the product.
Which detergent should I use?+
A technical wash made for shell garments, never one with additives – and never fabric softener.
Can I wash and proof in one round (wash-in)?+
Some products allow it, but a clean jacket first gives the best result. Check the product.
Can you do it for me?+
Yes. We wash and re-proof according to the garment and its care label. You see the price before you order.
Ready to fix it?