---
product_id: 212349226
title: "Paint Hardener, 3.5 oz, Paint Solidifier"
brand: "homax"
price: "$39.97"
currency: USD
in_stock: false
reviews_count: 5
category: "Homax"
url: https://www.desertcart.us/products/212349226-paint-hardener-3-5-oz-paint-solidifier
store_origin: US
region: United States of America
---

# Waterproof solidification Fast hardening in minutes Eco-friendly disposal Paint Hardener, 3.5 oz, Paint Solidifier

**Brand:** homax
**Price:** $39.97
**Availability:** ❌ Out of Stock

## Summary

> 💥 Harden your paint, free your space, save the planet!

## Quick Answers

- **What is this?** Paint Hardener, 3.5 oz, Paint Solidifier by homax
- **How much does it cost?** $39.97 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/212349226-paint-hardener-3-5-oz-paint-solidifier)

## Best For

- homax enthusiasts

## Why This Product

- Trusted homax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Waterproof Formula:** Ensures hardened paint resists moisture, preventing leaks and spills during disposal or storage.
- • **Eco-Conscious Cleanup:** Enables responsible paint disposal, freeing your space and reducing environmental impact.
- • **Compact & Easy Application:** 3.5 oz size with simple mixing process—minimal effort, maximum declutter.
- • **Instant Paint Solidification:** Transforms liquid paint into a solid mass within hours, making disposal effortless and mess-free.
- • **Universal Use Indoors & Outdoors:** Perfect for all your paint types and surfaces, from wood to walls, inside or out.

## Overview

Homax Paint Hardener (3.5 oz) is a waterproof, fast-acting liquid solidifier designed to transform leftover acrylic paint into a solid mass for easy, eco-friendly disposal. Suitable for indoor and outdoor use on various surfaces, it simplifies cleanup and helps maintain a clutter-free, environmentally responsible workspace.

## Description

Paint Hardener, 3.5 oz, Paint Solidifier : desertcart.in: Home Improvement

Review: I wanted to get rid of 3 gallons of old paint in a 5-gallon bucket. I used 4 bags of Homax 3535 paint hardener and spent 10 minutes mixing it into the paint. It began hardening almost immediately and the entire 3 gallons had solidified by the next day. This stuff works great and allows me to properly dispose of paint.
Review: We have no paint recycling available to us. I had around 20 cans of paint of various sizes that have accumulated from projects and room makeovers that my wife thought I- I mean “we” should do. I considered putting a can of paint in each of my neighbors’ trash bin at 4am, but my environmental morality mixed with the challenge of tactically moving down the alleyway with multiple cans of paint without starting a neighborhood dog barking festival prevented this option. I then discovered Homax paint hardener. Easy to use, easy to dispose. With the aid of my 12 year old son, we were able to easy harden the paint and he was able to get paint on the right side of his clothes. Not only was my wife excited about the disposal of “her” paint, she was super pumped about the redesign on our son’s clothes. Some things we learned along the way: 1. Latex gloves, cardboard, scrap paper, disposable paint stirrers, and trash bags will make this a simple process. 2. Layout some scrap cardboard as a work surface. 3. Slowly and incrementally pour the hardener into the paint while stirring the paint. Be sure to scrape away the paint from the sides and bottom of the can as you stir. 5. Once you get a thick oatmeal consistency, dump it onto scrap paper and let it set for around 15 minutes. 6. After it hardens, dispose of it into the trash if you have no prohibitions against it. 7. If the thin layer of paint is allowed to dry on the sides, it can be pealed away. 8. The empty paint cans are able to be recycled. My garage is now free of all the old paint cans. Thanks Homax.

## Features

- Waterproof

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074MC6V4L |
| Best Sellers Rank | #341,884 in Home Improvement ( See Top 100 in Home Improvement ) #147 in House Paint |
| Brand | Homax |
| Capacity | Onesize |
| Country of Origin | USA |
| Coverage | Medium |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,647) |
| Date First Available | 12 June 2018 |
| Finish Type | Eggshell |
| Generic Name | paint |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Is Waterproof | True |
| Item Dimensions LxWxH | 99.1 x 2.5 x 17.8 Centimeters |
| Item Form | Liquid |
| Item Model Number | 041072035354 |
| Item Part Number | 041072035354 |
| Item Volume | 3.5 Fluid Ounces |
| Item Weight | 99.8 g |
| Package Information | Tin |
| Paint Type | Acrylic |
| Shipping Weight | 0.1 Kilograms |
| Size | Onesize |
| Special Feature | Waterproof |
| Specific Uses For Product | Interior/Exterior |
| Surface Recommendation | Wood |
| UPC | 041072035354 |
| Water Resistance Level | Waterproof |
| Weight | 0.22 Pounds |

## Product Details

- **Brand:** Homax
- **Finish Type:** Eggshell
- **Item Volume:** 3.5 Fluid Ounces
- **Size:** Onesize
- **Special Feature:** Waterproof

## Images

![Paint Hardener, 3.5 oz, Paint Solidifier - Image 1](https://m.media-amazon.com/images/I/41VTXh9OuKL.jpg)
![Paint Hardener, 3.5 oz, Paint Solidifier - Image 2](https://m.media-amazon.com/images/I/618IhKaJRVL.jpg)

## Questions & Answers

**Q: will this harden varnish?**
A: Hi there, this product would not work for a varnish.

**Q: I have 2 quart cans am  I able split one envelope for both can?**
A: If one envelope is designed for a one gallon paint can, one envelope should work on up to 4 one quart cans (@4 quarts per gallon).  Good luck.

**Q: one month ago I paid $2.34, planned  to buy more & they are $7.65, why did the price more than triple in one month? Is there more than 1 in the pack?**
A: WOW that is ridiculous!  I don’t know, you’ll have to read the description. It should tell you if it is one pack or multiple packs.  Hopefully there are multiple packs for that price!  Inflation is out of hand!

**Q: Does the paint get hard or just clumpy?  I used a pack on 1/2 gallon of paint and it make a semi-dry mushy mix.**
A: This product should solidify the paint, as long as it’s properly mixed.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by W***T on 9 October 2025*

I wanted to get rid of 3 gallons of old paint in a 5-gallon bucket. I used 4 bags of Homax 3535 paint hardener and spent 10 minutes mixing it into the paint. It began hardening almost immediately and the entire 3 gallons had solidified by the next day. This stuff works great and allows me to properly dispose of paint.

### ⭐⭐⭐⭐⭐ Review
*by C***B on 10 September 2021*

We have no paint recycling available to us. I had around 20 cans of paint of various sizes that have accumulated from projects and room makeovers that my wife thought I- I mean “we” should do. I considered putting a can of paint in each of my neighbors’ trash bin at 4am, but my environmental morality mixed with the challenge of tactically moving down the alleyway with multiple cans of paint without starting a neighborhood dog barking festival prevented this option. I then discovered Homax paint hardener. Easy to use, easy to dispose. With the aid of my 12 year old son, we were able to easy harden the paint and he was able to get paint on the right side of his clothes. Not only was my wife excited about the disposal of “her” paint, she was super pumped about the redesign on our son’s clothes. Some things we learned along the way: 1. Latex gloves, cardboard, scrap paper, disposable paint stirrers, and trash bags will make this a simple process. 2. Layout some scrap cardboard as a work surface. 3. Slowly and incrementally pour the hardener into the paint while stirring the paint. Be sure to scrape away the paint from the sides and bottom of the can as you stir. 5. Once you get a thick oatmeal consistency, dump it onto scrap paper and let it set for around 15 minutes. 6. After it hardens, dispose of it into the trash if you have no prohibitions against it. 7. If the thin layer of paint is allowed to dry on the sides, it can be pealed away. 8. The empty paint cans are able to be recycled. My garage is now free of all the old paint cans. Thanks Homax.

### ⭐⭐⭐⭐ Review
*by C***T on 8 September 2025*

it worked great for cans 1/2 deep or less. If more than that, you would have to use 2 packages.

## Frequently Bought Together

- 3.5 oz Homax 3535 Waste Away Paint Hardener
- Xsorb Rock Solid Paint Hardener 1 Liter Bag
- 25 Pack Paint Stir Sticks, 12 Inch Wooden Paint Sticks for Mixing, Paint Stirrers, Garden and Library Markers

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-20*