Description Nikwax Cotton Proof is a wash-in waterproofing for cotton, polycotton and canvas that restores durable water repellency while keeping fabric soft, breathable and comfortable. Perfect for bush shirts, polycotton hiking pants and canvas workwear, it sheds rain and spray so cotton absorbs less water, dries faster and stays lighter on the move. The water-based formula is PFC-free, solvent-free and non-flammable, making it an easy at-home upgrade for performance and longevity. Use in a washing machine or by hand after a thorough clean for best results. Cotton Proof bonds to the fibres during a normal wash cycle, so there is no stiff, waxy feel and no heat cure required. Treated garments bead water and continue to breathe, helping regulate comfort during active use in cool, damp or changeable conditions. Ideal for regular maintenance of cotton and polycotton apparel used for hiking, travel and everyday wear. Nikwax Cotton Proof Features Wash-in DWR for cotton, polycotton and canvas Maintains fabric breathability and softness Water-based, PFC-free, solvent-free and biodegradable No heat activation required and non-flammable Helps garments absorb less water and dry faster Simple machine-wash or hand-application Optimised for regular care of outdoor cotton clothing Specifications Intended Use Reproofing cotton, polycotton and canvas garments Suitable Fabrics 100% cotton, cotton blends, canvas apparel Application Method Machine wash cycle or hand application at approx. 30 °C Performance Adds durable water repellency while preserving breathability Formulation Water-based, PFC-free, solvent-free, biodegradable Heat Requirement No heat cure required; air dry or tumble on low if care label allows Preparation Clean first with a suitable detergent free from softeners (for best results use a technical cleaner) Best For Hiking pants, bush shirts, canvas jackets, polycotton travel wear Care Notes Follow garment care label; avoid fabric softeners and bleach
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