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Nikwax Cotton Proof, 1000ml, Waterproofing for Cotton, Polycotton, and Canvas, Adds Water Repellency

4.3 4.3 out of 5 stars 877 ratings
$13.37 with 21 percent savings $1.34 per Fl Oz
List Price: $16.95

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10 fl. oz
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Purchase options and add-ons

Brand Nikwax
Item Form Liquid
Scent Unscented
Specific Uses For Product Waterproofing Cotton
Material Feature Cotton

About this item

  • High performance waterproofer designed to enhance the performance of wet weather cotton and polycotton items
  • Easy to use wash-in waterproofing for all cotton, polycotton, canvas clothing and equipment adds water repellency, revives breathability, and reduces water absorbency
  • Enhances the performance of your gear, keeping you warmer and drier
  • Recommended for all cotton and polycotton clothing and gear
  • Nikwax products are PFAS-free, water based, non-persistent, and contain no optical brighteners or added scent. Machine wash safe
  • All items must first be cleaned with Nikwax Tech Wash before waterproofing. Household cleaners leave behind water attracting residues
  • One full cap of product is approximately 50ml
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Nikwax Cotton Proof, 1000ml, Waterproofing for Cotton, Polycotton, and Canvas, Adds Water Repellency
$13.37 ($1.34/Fl Oz)
Get it as soon as Wednesday, May 15
In Stock
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Nikwax Tech Wash , Green ,10 fl. oz.
$10.95 ($1.10/Fl Oz)
Get it as soon as Wednesday, May 15
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Nikwax Softshell Proof, Wash-In
$11.74 ($1.17/Fl Oz)
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From the manufacturer

cotton proof

Cotton Proof - Waterproofing Steps

Prep

Wash

Proof

Dry

1. PREP

Zip zippers & empty pockets. Clean detergent drawer in washing machine to remove any residue. Place garments in washing machine.

2. WASH

The garments must first be cleaned with Nikwax Tech Wash. Add Tech Wash to washing machine, then wash according to garment care label.

Do NOT use household detergents as they will compromise waterproofing treatment.

3. WATERPROOF

When the wash cycle with Tech Wash is finished, leave items in washing machine. Shake Cotton Proof well, add to washing machine and wash according to care label for a second wash cycle.

Do NOT combine Tech Wash & Cotton Proof together within the same load.

4. DRY

Dry according to label (dryer or air dry).

Cotton Proof Tech Wash Down Proof Polar Proof TX.Direct Wash-In Softshell Proof
Cotton Proof Tech Wash Down Proof Polar Proof TX.Direct Wash-In Softshell Proof
Customer Reviews
4.3 out of 5 stars
877
4.5 out of 5 stars
2,988
4.6 out of 5 stars
900
4.6 out of 5 stars
259
4.5 out of 5 stars
2,581
4.5 out of 5 stars
358
Price $13.37 $10.95 $13.95 $16.03 $14.95 $11.74
For Waterproofing Cotton, canvas, and polycotton fabric Down-filled jackets, blankets, and sleeping bags Polar fleece, garments, and accessories Rain gear, ski jackets, and synthetic-filled sleeping bags Technical softshell apparel with four-way stretch
For Cleaning Rain jackets, ski clothing, and synthetic-filled gear
Available in Cleaning/Waterproofing DUO-Pack ✓ ✓ ✓
Available in Spray-On ✓ ✓ ✓
Available in 1 Liter ✓ ✓ ✓ ✓

Product information

Technical Details

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Nikwax Cotton Proof, 1000ml, Waterproofing for Cotton, Polycotton, and Canvas, Adds Water Repellency

Nikwax Cotton Proof, 1000ml, Waterproofing for Cotton, Polycotton, and Canvas, Adds Water Repellency

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Important information

Ingredients

water-based

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
877 global ratings

Customers say

Customers have mixed opinions about the water resistance, quality, and ease of use of the cleaning agent.

AI-generated from the text of customer reviews

56 customers mention24 positive32 negative

Customers are mixed about the water resistance of the cleaning agent. Some mention that it makes the robe completely water proof, while others say that it soaked up any kind of water it came into contact with.

"...they do not soak up water like a towel anymore, but they are not impervious to water (impervious should not be expected anyway)...." Read more

"...Short of waxing, cotton will never be truly waterproof but I would say that if there were light rain or showers in the forecast I wouldn't be..." Read more

"...It now has a nice weather repellent layer. Make sure you shake the bottle well before using!!! This product is thick." Read more

"...] Used this product after using their wash, these pants had no resistance to water prior to this...." Read more

43 customers mention18 positive25 negative

Customers are mixed about the quality of the cleaning agent. Some mention it works well, while others say it didn't work any better. Some say the spray version doesn't worked as well, and that it stiffens fabric.

"...One note : It does not work if the water pools for 24 hours." Read more

"It seems to work properly. The blanket I used it on-which is used outside on my car-seems to repel water which is what I wanted." Read more

"...If you do not do these extra steps the product won't work well. If you do these extra steps it works great!..." Read more

"When used as directed it works very well." Read more

5 customers mention2 positive3 negative

Customers are mixed about the ease of use of the cleaning agent. Some mention it's pretty easy to use and simple to apply, while others say it'd be tedious to use.

"...TL;DR - Product was tedious to use, left a horrible mess, and didn't work to make anything water resistant." Read more

"This was pretty easy to use. I bought a cotton canvas jacket for my daughter and wanted her to be able to use it in light rain...." Read more

"a little messy to work with...." Read more

"This is simple to apply with a straight forward wash. I took my jacket out of the washer after the1st spin cycle...." Read more

Made my field coat water resistant.
4 Stars
Made my field coat water resistant.
I used this product on my denim jacket, an L.L. Bean field coat, 2 pairs of work pants, and my dog’s sweatshirt. After one application, the clothing had no changes in color or feel. They remained just as comfortable as they were, only now they are much more water resistant.This L.L. Bean field coat has never been treated before and is 100% cotton. I’ve had this coat for nearly 15 years, and wear it in the fall and spring. As you can see in the video, the treatment made the surface very water resistant. I wouldn’t say it made the coat fully waterproof, but it will certainly hold up in light-medium rain. This product gave new life to a beloved old coat.The rest of the clothing had similar results to the coat, and there isn’t really anything negative for me to say about this product. I will definitely use this product again in the future. The only reason I made it 4 stars is because none of the clothing is actually waterproof, just highly water resistant, especially for pure cotton.
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Top reviews from the United States

Alex Kistner
5.0 out of 5 stars Worked for vintage M65 Field Jacket
Reviewed in the United States on December 7, 2023
Style: 10 fl. ozVerified Purchase
I was a little nervous given the variability on some of the reviews but I washed my M65 field jacket with tech wash and then cotton proof in my washing machine and I have to say that I'm pretty impressed, water beads up on rolls off similar to what the other field jacket user reported. Short of waxing, cotton will never be truly waterproof but I would say that if there were light rain or showers in the forecast I wouldn't be concerned.

In the bottle the proofer smells a little like Elmer's glue with a trace of vinegar but I can't detect it at all on the dried garment.
One person found this helpful
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ActiveMum
4.0 out of 5 stars If water pools for 24 hours, it gets past this product
Reviewed in the United States on April 14, 2023
Style: 10 fl. ozVerified Purchase
I want to give a 5-star but the waterproofing of the entire surface is hard to achieve, even though I know I have bought the right amount. I can say that for the areas that this product did get onto, it definitely works. One note : It does not work if the water pools for 24 hours.
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leah taylor
5.0 out of 5 stars Waterproof/Resistant
Reviewed in the United States on December 21, 2023
Style: 10 fl. ozVerified Purchase
The media could not be loaded.
 Used this product after using their wash, these pants had no resistance to water prior to this. Also threw a heavy cotton coat in the wash with it. (Coat review is on the wash bottle)
Used a full bottle of both just to better my chances. Heading to Iceland next week and needed something water resistant. Base layers should keep me warm, now my pants and coat should keep me dry.
Thanks and good luck with your journey!😎
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John & LaRinda Leach
5.0 out of 5 stars GREAT PRODUCT!
Reviewed in the United States on November 11, 2016
Style: 33.8 fl. ozVerified Purchase
This is a great product. My husband is a surveyor and he was in the rain and tall wet grass all day and stayed dry. He also said it cut the wind really well and it was 30 adn 40 MPH wind that day. If you do not do these extra steps the product won't work well. If you do these extra steps it works great!

First we ran our washer with vinegar ( put 2 to 3 cups of vinegar in where liquid detergent goes and hot water to remove detergent and fabric softener build up through out my machine. It is in your machine even when you cannot see it. I hadn't used vinegar in awhile so we done this procedure twice. We washed my husbands clean pants from the closet with vinegar only (2 cups) on a long wash and no fabric softener. Actually we ran them a second time on a short wash with vinegar and then a rinse/spin only. Then we soaked his pants in a 5 gallon bucket of water with the product for a several hours. We dripped them out well and put them on a mini short rinse and spin. We dried them with HOT HEAT.

It works!
29 people found this helpful
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Stephen Esposito
5.0 out of 5 stars Good stuff
Reviewed in the United States on January 22, 2020
Style: 10 fl. ozVerified Purchase
As others have noted in reviews, it looks and smells like diluted Elmer's white glue. Make sure you shake well and make sure to follow instructions.

My deviations from instructions:
After cleaning clothes (jackets and pants) with regular detergent, I ran them full cycle with a cup of vinegar. Then removed them and ran a full cycle of just water and vinegar (no clothes) to clean out any soap.
Put clothes back in, filled the machine with water (all items needed cold), added half the bottle, let agitation cycle run, then stopped machine and let everything sit for at least an hour.
Re-Started machine at beginning, let it run through all cycles uninterrupted. Put clothes in dryer without a static/softener cloth on lowest heat.
Did this with Wrangler cotton blend cargo work pants, a no-name poly cotton jacket, knit poly winter hat, an LL Bean barn jacket (Teflon treated from manufacturer), and a Carhartt heavy cotton duck jacket (no factory waterproofing).
The LL Bean, and Carhartt jackets got a spray down of silicone after. Both bead water well, the LL Bean jacket not as well as the Carhartt.
The pants bead water a bit, they do not soak up water like a towel anymore, but they are not impervious to water (impervious should not be expected anyway).
I do plan on using this stuff annually on all of my usual work outerwear.
13 people found this helpful
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Shannon Hacker
1.0 out of 5 stars Doesn't work
Reviewed in the United States on December 24, 2023
Style: 10 fl. ozVerified Purchase
The pants in the pictures are 100% cotton and were cleaned as per the directions from Nikwax prior to applying the product. I ran this pair through with one additional pair of pants using the recommended amount of solution and at the recommended washer setting and temp. This was the result - it was poring outside when I took these pictures, so I figured it would be a good test. Water hit the pants and soaked right in, no resistance whatsoever. You can see one bead sort of rolling off in one of the pictures, but that was only because I had the pants at an angle when I took the picture. I figured I would go do a short three mile hike to see if it made any difference as you can see, the parts of the pants exposed below my poncho are completely soaked through (the pic of my feet). This stuff didn't even provide any level of repellency, let alone "proofness". I've used Nikwax products in the past and they generally do what they are supposed to, so I was disappointed with this one. One star, but would be zero if I could give it a zero. It's not worth sending back, so I may do another wash cycle using more product to see if makes any difference.
Customer image
Shannon Hacker
1.0 out of 5 stars Doesn't work
Reviewed in the United States on December 24, 2023
The pants in the pictures are 100% cotton and were cleaned as per the directions from Nikwax prior to applying the product. I ran this pair through with one additional pair of pants using the recommended amount of solution and at the recommended washer setting and temp. This was the result - it was poring outside when I took these pictures, so I figured it would be a good test. Water hit the pants and soaked right in, no resistance whatsoever. You can see one bead sort of rolling off in one of the pictures, but that was only because I had the pants at an angle when I took the picture. I figured I would go do a short three mile hike to see if it made any difference as you can see, the parts of the pants exposed below my poncho are completely soaked through (the pic of my feet). This stuff didn't even provide any level of repellency, let alone "proofness". I've used Nikwax products in the past and they generally do what they are supposed to, so I was disappointed with this one. One star, but would be zero if I could give it a zero. It's not worth sending back, so I may do another wash cycle using more product to see if makes any difference.
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Joyce A Lynch
3.0 out of 5 stars Did not work as well for us.
Reviewed in the United States on June 2, 2021
Style: 10 fl. ozVerified Purchase
I had a cotton blend fabric that I washed first with normal detergent as it wasn’t waterproof fabric to begin with. I have a top loader machine and I added the suggested amount of waterproofing solution and set my machine to 1/4 load, allowing the machine to fill and mixing the solution in before adding my fabric. After letting it complete it’s cycles I popped it into the dryer on low for a bit then hung it up to complete drying. My fabric beaded water in some areas and allowed water through in others. Fearing that the washing machine used too much water to make the waterproofing solution too diluted, we placed the solution with a small amount of water into a bin keeping the ratio of solution to water much higher. We allowed the fabric to soak for about 3 hours, agitating and flipping the fabric around often, and then hung to dry. The fabric beaded water better but still had patches where water would soak through a little.
We read where folks had mixed results, and I’m sad to say that we are part of the unlucky group. My fabric is lightly waterproofed, but it definitely does not bead water like they show in their online video.
2 people found this helpful
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casey keith
4.0 out of 5 stars It works well
Reviewed in the United States on January 23, 2024
Style: 10 fl. ozVerified Purchase
I tried this on a vintage jacket after using a tech wash to clean it. It now has a nice weather repellent layer. Make sure you shake the bottle well before using!!! This product is thick.
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Top reviews from other countries

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Nadya Lopez
5.0 out of 5 stars Works great!
Reviewed in Canada on February 12, 2024
Style: 10 fl. ozVerified Purchase
I didn’t use it the way it says on instructions. I diluted it and put it into spray bottle and applied to a snowsuit I made out of water repellent fabric. Not it’s really waterproof.
Not sure how long it will stay and how often I will neeed to reapply it. I guess depends on weather and use, but I still have over half the bottle - so will last for a while.
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Karl
5.0 out of 5 stars Nikwax imprägnieren
Reviewed in Germany on April 23, 2024
Style: 10 fl. ozVerified Purchase
Gut das es Nikwax gibt. Einfach in die Waschmaschine und fertig. Leider muffelt die Jacke immernoch . So werde ich den Vorgang wiederholen müssen. Ob sie Wasserdicht ist konnte ich noch nicht prüfen.
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Domi
5.0 out of 5 stars Très bien
Reviewed in France on April 1, 2024
Style: 33.8 fl. ozVerified Purchase
Très satisfaite. Mes vêtements en coton sont déperlants avec ce produit.
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Cliente Amazon
5.0 out of 5 stars Funziona
Reviewed in Italy on November 30, 2023
Style: 33.8 fl. ozVerified Purchase
Ero scettico, invece funziona molto bene.
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Roger
4.0 out of 5 stars Waterwerken, niet waterdicht
Reviewed in Belgium on October 25, 2023
Style: 10 fl. ozVerified Purchase
Verhoogt windweerstand en verhindert waterabsorptie. Getest op
Polykatoen. Maakt kleding in ieder geval sneller drogend en grotendeels waterafstotend maar niet waterdicht.
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