How does this compare to their "wash-in" version? I assume it would be more economical since it's not being diluted by a bunch of water?

Actually just the opposite... the Spray-On variety is simply a watered down version of the Wash-in, which means you are paying for a diluted product. I have had great results making my own Spray-in solution by using 1/3 Wash-in product and 2/3 water in my own spray bottle.

Can you spray it on a dry garment?

Spraying this on a dry (oops!) 100% polyester coat resulted in terrible spotting stains. Any ideas how to remove the stains? I've tried baking soda, vinegar, stain remover, etc. and the coat has been washed over three times. If anything, the spots look worse. I've ruined a brand new coat by forgetting to apply it to WET fabrics!

if you run out of the small spray bottle and wanted to refill, can the wash in work or should just buy a new bottle and spayer?

In a pinch, the wash in could work to refill the spray bottle but the sprayis a different formulation designed to work better as a spray.

Can this work on a polyester shower curtain ? If so, would it have to be applied often?

Used it on my London Fog raincoat (polyester). Not a petro-solvent vehicle; water soluble. So, no problem. Has a chemical smell for a few days as it dries and sets. Goes away in about 4 days. No discoloration.

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Nikwax TX.Direct Spray-On Waterproofing, 500ml

Product ID: 1407538

Details

Brand
Nikwax
Item Form
spray
Item Weight
16 ounces
Recommended Uses For Product
Travel
Specific Uses For Product
Waterproofing

🌿PFAS-free, eco-friendly formula

💧500ml high-performance spray

🧥Restores DWR on jackets & outerwear

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Description

💦 Stay dry, stay ahead—renew your gear’s water defense like a pro!

SPRAY ON SIMPLICITY - Effortlessly renew water repellency with a quick spray—no mess, no fuss.
TRUSTED BY TOP BRANDS - Compatible with GORE-TEX, Patagonia, North Face, and more—gear up like the pros.
BREATHE EASY STAY DRY - Revitalizes breathability so you stay warm and comfortable in any weather.
ECO CONSCIOUS WATERPROOFING - PFAS-free, water-based, and non-flammable for a safer, greener outdoor experience.
PREPPED FOR PEAK PERFORMANCE - Use after Nikwax Tech Wash to eliminate residues and maximize waterproofing power.

Nikwax TX.Direct Spray-On Waterproofing is a 500ml high-performance treatment designed to restore durable water repellency (DWR) and breathability to waterproof jackets and technical outerwear. Compatible with leading outdoor brands and fabrics like GORE-TEX, this eco-friendly, PFAS-free spray revitalizes your gear’s water resistance without compromising breathability. Aerosol-free and non-flammable, it’s the essential aftercare for rain, ski, and snow gear—just remember to clean first with Nikwax Tech Wash for best results.

Specifications

ASIN	B0019GLADA
Best Sellers Rank	#846 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Camping Sleeping Bag Accessories
Brand	Nikwax
Brand Name	Nikwax
Customer Reviews	4.4 out of 5 stars 7,173 Reviews
Global Trade Identification Number	00703861000249
Item Form	spray
Item Type Name	Apparel Aftercare
Item Weight	16 ounces
Manufacturer	Nikwax
Model Number	572
Number of Items	1
Part Number	572
Recommended Uses For Product	Travel
Specific Uses For Product	Waterproofing
UPC	703861000249 703861001352 703861000232
Unit Count	16.9 Fluid Ounces

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SAR 162

Duties & taxes included

In stock

Sold byAmazon KSADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to KSA.

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