Nikwax Cotton Proof 1L - Wash-In Waterproofer for Cotton & Polycotton

The Nikwax Cotton Proof is a wash-in waterproofer for cotton and polycotton clothing and gear. It adds water repellency so your cotton gear keeps you warmer and drier in wet weather.

Cotton Proof is designed to enhance the wet-weather performance of cotton, polycotton and canvas items. Use it in the washing machine or by hand: it adds water repellency, revives breathability and reduces how much water the fabric absorbs. It is non-flammable and PFAS-free, and this 1 litre bottle is a good size for treating larger items or several garments.

Why you'll love it

• Easy wash-in treatment – use in the washing machine or by hand
• Adds water repellency – helps cotton shrug off rain
• Revives breathability – reduces water absorbency of the fabric
• PFAS-free – non-flammable, water-based formula

Good to know

• Volume: 1 litre
• For cotton, polycotton and canvas
• Clean items first, ideally with Nikwax Tech Wash
• Not intended for waxed cotton – use Nikwax Wax Cotton Proof

Who it's for

Anyone who wants to waterproof cotton or polycotton jackets, canvas bags or outdoor workwear.