---
product_id: 401544241
title: "ComStar Pure Lye | 99% Pure Sodium Hydroxide Beads | Eco-Friendly, Industrial Strength, Biodegradable Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making | 1 lb. (30-500)"
brand: "comstar"
price: "€ 79.17"
currency: EUR
in_stock: true
reviews_count: 5
category: "Comstar"
url: https://www.desertcart.fr/products/401544241-comstar-pure-lye-99-pure-sodium-hydroxide-beads-eco-friendly
store_origin: FR
region: France
---

# eco-friendly & biodegradable static-free beads for soap making 99% pure industrial strength ComStar Pure Lye | 99% Pure Sodium Hydroxide Beads | Eco-Friendly, Industrial Strength, Biodegradable Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making | 1 lb. (30-500)

**Brand:** comstar
**Price:** € 79.17
**Availability:** ✅ In Stock

## Summary

> ⚡ Clear drains, craft soaps, and save the planet—one bead at a time!

## Quick Answers

- **What is this?** ComStar Pure Lye | 99% Pure Sodium Hydroxide Beads | Eco-Friendly, Industrial Strength, Biodegradable Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making | 1 lb. (30-500) by comstar
- **How much does it cost?** € 79.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/401544241-comstar-pure-lye-99-pure-sodium-hydroxide-beads-eco-friendly)

## Best For

- comstar enthusiasts

## Why This Product

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

## Key Features

- • **Safe on All Fixtures:** Non-acidic and safe for chrome, metal, plastic pipes, and septic systems—professional strength without the damage.
- • **Precision Bead Design:** Unique bead shape sinks quickly to attack blockages at the source—no clumping, no static, just fast results.
- • **Eco-Conscious Cleaning:** Biodegradable and odorless formula that’s tough on clogs but gentle on your pipes and the planet.
- • **Soap Makers’ Secret Weapon:** Dissolves rapidly and evenly, making your soap-making process smoother, faster, and mess-free.
- • **Unmatched Purity, Maximum Power:** Experience 99% pure sodium hydroxide beads engineered for industrial-grade drain clearing and soap crafting.

## Overview

ComStar Pure Lye offers 99% pure sodium hydroxide in a unique bead form that delivers industrial-strength drain clearing and superior soap-making performance. This eco-friendly, biodegradable, and odorless formula is safe on all fixtures and septic systems, making it the go-to choice for professionals and home users alike who demand fast, effective, and responsible cleaning solutions.

## Description

ComStar Pure Lye is an industrial-strength environmentally safe, bead formula designed to clear out drains, grease traps, septic systems, and roots. ComStar Pure Lye is also a best-selling soap maker. This sodium hydroxide formula is the purest white, bead-size lye in the world—99% pure. A natural drain opener, ComStar Pure Lye is biodegradable and odorless with a non-acid formula that is safe on fine fixtures, chrome trim, and metal or plastic pipes. This amazing product clears out clogged and slow-moving drains, grease traps, and septic systems, without harming septic tanks or cesspools. Because of the unique bead shape, ComStar Pure Lye will sink to the bottom of standing water and attack the cause of the blockage for a fast break-up. ComStar Pure Lye does not stink or create fumes and has become a favorite drain-opening product for homes, schools, hospitals, cafeterias, and restaurants. ComStar Pure Lye’s small bead form is preferred for soap making. Unlike more common flake formulas, ComStar Pure Lye Beads do not clump together, create static, and dissolve quickly. Because of this, soap making is faster and easier with ComStar Pure Lye.

Review: Algo tardado pero buen producto - Buen producto
Review: Miracle worker - My kitchen sink backs into my bathroom sink once a year. The plumber says its roots. I dont beleive him. This year, I wasnt spending $700 for them to come out and clear the lines. Since december I have tried zap stuff, twice and it didnt work. I borrowed a snake, snaked thru the entire line, didnt work. I almost gave up and called a plumber but decided to come on desertcart and look at reviews on drain cleaners. This product does NOT disappoint!!! It arrived about 2 hours ago. I heavily armed myself with protective gloves, eyewear and old heavy clothes. (My dad scared the life out of me about this stuff being very dangerous) I read the directions about 40 times before I was confident enough to use it. I really didnt want to burn an arm off or worse, cause my pipes to melt causing me more money that I dont have. Ok. I followed the direction for a slow drain. First I boiled water and sent that down the drain a few times as it says to "warm the pipes up" then I used one cup of this miracle stuff in each drain. It fizzed, hissed and reminded me of the science experiment in middle school of an exploding volcano that only half works... it erupted, slightly. Then all settled and I waited, and waited. I didnt want to jump the gun at just 15 minutes. This was some major clog we were working with. So while I waited, I started boiling water in ever big pot I had on all my burners. Alexa rang and my time was up! I started off pouring the boiling water SLOWLY down the first drain I dropped the product down. Nothing. No fizzing, no exploding. It just kept draining. Shocked. I ran to my kitchen and started dumping water down the drain... surely it would back up into my bathroom sink again... three gallons down the hatch... i run to the bathroom... it's clear! Holy moly! I put this stuff to the test. I run both the sinks hot water full blast down the kitchen sink and bathroom. Now I'm running back and forth like a crazy woman but guess what! Nooooo clog, no water pooling, nothing. I'm so amazed with this product. For weeks I have been stressing about not having the money to fix this, but after spending under 6 bucks on this stuff I am floored. I will NEVER buy any other drain cleaner again and neither should you! This stuff is a game changer!

## Features

- manufacturer: Comstar
- Item Trademark: COMSTAR
- Item Weight: pounds, pounds, 1., 1.
- Item Category: Drain Opener Substance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00PKNBK24 |
| Best Sellers Rank | #162,323 in Health ( See Top 100 in Health ) #730 in Household Drain Openers |
| Brand | Comstar |
| Brand Name | Comstar |
| Customer Reviews | 4.5 out of 5 stars 5,241 Reviews |
| Global Trade Identification Number | 00024924305003 |
| Included Components | drain opener |
| Item Form | beads |
| Item Type Name | Pure Lye Drain Opener |
| Item Weight | 1 Pounds |
| Item weight | 1 Pounds |
| Liquid Volume | 1 Liters |
| Manufacturer | ComStar International, Inc. |
| Model Number | 30-500 |
| Number of Items | 1 |
| Part Number | 024924305003 |
| Product Benefits | Removes Clog |
| Product benefits | Removes Clog |
| Scent | Fragrance free |
| State of Matter | Solid |
| State of matter | Solid |
| UPC | 024924305003 |
| Unit Count | 16 Grams |
| Unit count | 16 Grams |

## Product Details

- **Brand:** Comstar
- **Item weight:** 454 g
- **Product benefits:** Removes Clog
- **Scent:** Fragrance free
- **State of matter:** Solid

## Images

![ComStar Pure Lye | 99% Pure Sodium Hydroxide Beads | Eco-Friendly, Industrial Strength, Biodegradable Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making | 1 lb. (30-500) - Image 1](https://m.media-amazon.com/images/I/81comxs3VkL.jpg)

## Questions & Answers

**Q: Can I use this for cold process soap making?**
A: I believe so. This should be NaOH, sodium hydroxide. I know people use this to make soap but I don't know if they are making cold process soap........

**Q: Is it safe for Bathtub brass drain and pipe?**
A: All the reviews I read on this said it was ok, and that was my experience.  The shower drain had a metal cover.  Since the product warns DO NOT bring into contact with aluminum, I removed the cover to the drain.  I just didn't have a clue what the cover was made of.  In the sink, I remove the stopper that sits inside the drain for both that reason, and I wanted to be able to pour the lye straight into the drain.  I ran hot water down both for about 5 minutes.  Then I used paper towels to soak and wipe up any water or dampness around the drain.I'm not sure I emphasized it enough, but the only surprise I got was when I opened the bottle of lye itself.  When I removed the cap and started to tip it to put into the measuring cup, the tiny little beads of lye (the size of a pinhead) started to literally jump out of the bottle!!  Just that very little bit that did this is what made me decide to pour it straight fro the bottle down the drain.  Holding the measuring cup next to the bottle its pretty obvious that the bottle contains about 2 cups worth anyway, so I poured a cups worth (half the bottle) down the drain.The sink drain actually filled up to the top of the drain at the sink so I stopped pouring.  The lye just sat there at the top of the drain.  I didn't experience any volcanic outpouring from the drain, but since I read it was possible I decided to turn the measuring cup upside down over the drain just in case.  Then I started to turn the water on ever so carefully.  I had just the slightest amount of water dripping out of the faucet.  I watched it run slowly to the drain and under the measuring cup.  I didn't hear or see any crazy reaction, so I turned the water on ever so gently a little more.  I slowly got to a point of a gentle stream of water and had it go long enough that I felt it would be about a cups worth of water.  I then waited about 10 minutes maybe.  (As you can tell, I didn't go by the directions exactly due to what I had to work with, but I certainly used them as a guide line, and the safety warnings as gospel).  I then ran the water on hot for about 15 minutes, in which the whole time the water went down the drain perfectly and smoothly just as if it was a brand new drain and pipes!!I just used this yesterday and I'm still quite thrilled with how well it worked, especially after how long its been a problem drain, and how many hundreds of dollars we've spent over the years on store bought drain cleaners and local pluming specialists.  I definitely recommend this stuff!!  The only downside I see is that you MUST be VERY CAREFUL as it warns of it coming into contact with skin, eyes, aluminum, and of course water or any other liquid.  Fumes don't seem to be a problem though as long as you don't have your face above the stuff when you're pouring it, or over the drain.  I just left the fan on, the door open, and told everyone to stay out of the bathroom until I say otherwise.Sorry if I rambled on here.  Its just that its been so bad for so long.  I'm definitely ordering another couple of bottles so I can do my other drains.  This stuff really isn't very expensive, especially if you're getting more than one bottle so the shipping isn't as much.  Hope I helped you out a little.  If you have any other questions feel free to ask.  Take care, stay safe, and God bless, Nolan

**Q: Can this be used on a pop-up drain in a bathroom sink?  How would you do that?**
A: Probably only with DIFFICULTY.  My plug wouldn't stay up, SO I had removed it completely LONG ago.  I had unobstructed drain opening to work with.  Suggest you phone HORN PLUMBING, my supplier, at 417-256-5191; ask them, staff knowledgeable and VERY HELPFUL.

**Q: How much of lye do I need to pour to unclog a completely stopped main line?**
A: Not an easy question to answer with certainly.  The blockage in a "Main" line can be caused by tree/plant roots, food and toilet waste and a combination of some or all.  Also, where in the main the blockage is will determine how much Pure Lye to add.  All these are probably unknown.  If the blockage is caused by roots then Pure Lye will not be effective.  We suggest putting in a full one pound bottle into the toilet and flush the toilet several times.  You will have to wait a good hour before you may see some results.  You may have to do this several time but even then there is no guarantee the blockage will be broken up due to the nature of the blockage and where the blockage is.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Algo tardado pero buen producto
*by A***Z on 7 October 2019*

Buen producto

### ⭐⭐⭐⭐⭐ Miracle worker
*by J***S on 28 January 2020*

My kitchen sink backs into my bathroom sink once a year. The plumber says its roots. I dont beleive him. This year, I wasnt spending $700 for them to come out and clear the lines. Since december I have tried zap stuff, twice and it didnt work. I borrowed a snake, snaked thru the entire line, didnt work. I almost gave up and called a plumber but decided to come on Amazon and look at reviews on drain cleaners. This product does NOT disappoint!!! It arrived about 2 hours ago. I heavily armed myself with protective gloves, eyewear and old heavy clothes. (My dad scared the life out of me about this stuff being very dangerous) I read the directions about 40 times before I was confident enough to use it. I really didnt want to burn an arm off or worse, cause my pipes to melt causing me more money that I dont have. Ok. I followed the direction for a slow drain. First I boiled water and sent that down the drain a few times as it says to "warm the pipes up" then I used one cup of this miracle stuff in each drain. It fizzed, hissed and reminded me of the science experiment in middle school of an exploding volcano that only half works... it erupted, slightly. Then all settled and I waited, and waited. I didnt want to jump the gun at just 15 minutes. This was some major clog we were working with. So while I waited, I started boiling water in ever big pot I had on all my burners. Alexa rang and my time was up! I started off pouring the boiling water SLOWLY down the first drain I dropped the product down. Nothing. No fizzing, no exploding. It just kept draining. Shocked. I ran to my kitchen and started dumping water down the drain... surely it would back up into my bathroom sink again... three gallons down the hatch... i run to the bathroom... it's clear! Holy moly! I put this stuff to the test. I run both the sinks hot water full blast down the kitchen sink and bathroom. Now I'm running back and forth like a crazy woman but guess what! Nooooo clog, no water pooling, nothing. I'm so amazed with this product. For weeks I have been stressing about not having the money to fix this, but after spending under 6 bucks on this stuff I am floored. I will NEVER buy any other drain cleaner again and neither should you! This stuff is a game changer!

### ⭐⭐ Not for me
*by E***A on 17 October 2026*

Had high hopes for this product to clear my very slow moving sink drain. As I had watched videos and read previous reviews saying/showing that it does the job. But this isn't the case for me didn't work at all and I tried using it 3 days in a row to give it a chance. You do get a lot of product in the bottle and the instructions are clear. But my drain is stubborn still hunting for a product that works this is the 4th I have tryed.

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-11-15*