---
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: "8475 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "Comstar"
url: https://www.desertcart.is/products/401544241-comstar-pure-lye-99-pure-sodium-hydroxide-beads-eco-friendly
store_origin: IS
region: Iceland
---

# biodegradable & eco-friendly formula fast-dissolving, static-free bead form 99% pure sodium hydroxide beads 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:** 8475 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Clear drains, craft soaps, conquer clogs—pure power in every bead!

## 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?** 8475 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **Dual-Purpose Power:** Perfect for clearing drains and grease traps or crafting artisan soaps with ease and consistency.
- • **Precision Bead Design:** Unique bead shape sinks quickly to attack blockages at the source—no clumping, no static.
- • **Eco-Conscious Cleaning:** Biodegradable and odorless formula that’s tough on clogs but safe on your pipes and the planet.
- • **Trusted by Professionals:** Preferred by homes, schools, hospitals, and restaurants for safe, effective drain maintenance.
- • **Industrial-Strength Purity:** Experience unmatched 99% pure sodium hydroxide for powerful, reliable results every time.

## Overview

ComStar Pure Lye delivers industrial-strength, 99% pure sodium hydroxide in a unique biodegradable bead form that dissolves quickly without clumping or static. Safe for all fixtures and septic systems, it’s a top-rated, eco-friendly drain opener and soap-making essential trusted by professionals and enthusiasts alike.

## 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: This pure sodium hydroxide is exactly what I needed for making soap. The beads dissolve quickly and consistently. 99% purity ensures reliable results every time. The container is well-sealed and includes proper safety warnings. Works great for drain cleaning too when used properly. Much better quality than what you find in stores. Excellent product for soap making enthusiasts!
Review: Buen producto

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00PKNBK24 |
| Batteries required | No |
| Best Sellers Rank | #136,758 in Health ( See Top 100 in Health ) #423 in Household Drain Openers |
| Customer Reviews | 4.6 4.6 out of 5 stars (5,170) |
| Date First Available | 7 August 2012 |
| Import designation | Made in the USA and Imported |
| Included components | drain opener |
| Item Weight | 454 g |
| Item diameter | 3 Inches |
| Item model number | 30-500 |
| Item volume | 1 |
| Scent | Fragrance free |

## 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

### ⭐⭐⭐⭐⭐ Review
*by J***N on 6 February 2026*

This pure sodium hydroxide is exactly what I needed for making soap. The beads dissolve quickly and consistently. 99% purity ensures reliable results every time. The container is well-sealed and includes proper safety warnings. Works great for drain cleaning too when used properly. Much better quality than what you find in stores. Excellent product for soap making enthusiasts!

### ⭐⭐⭐⭐⭐ Review
*by A***Z on 7 October 2019*

Buen producto

### ⭐⭐⭐⭐⭐ Review
*by C***L on 16 December 2025*

This product is amazing!!! I’ve used it intermittently over the past 10+ years, and it’s always worked great for me. I used it in a home we bought new, and it worked so well I never needed to ask my husband to help with a slow drain. We eventually moved into an older home with a septic tank, and my husband’s retired now, so when he noticed a slow drain, he tried Drano, with minimal success. I ordered this, as it’s no longer available in stores in my area, and it worked like magic! My husband was so impressed! It’s easy to use, and the effects last! I would recommend this to everyone! It’s definitely worth the money!

## Frequently Bought Together

- 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)
- Walfos Silicone Soap Molds Set of 3, 6 Cavities Rectangle Silicone Soap Molds for Homemade Craft Soap Mold, Cake,Chocolate ＆ Ice Cube Tray（Blue & Purple ＆ Pink）
- Yellow Brick Road 100% Raw Unrefined Shea Butter-African Grade a Ivory 1 Pound (16oz)…

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.is/products/401544241-comstar-pure-lye-99-pure-sodium-hydroxide-beads-eco-friendly](https://www.desertcart.is/products/401544241-comstar-pure-lye-99-pure-sodium-hydroxide-beads-eco-friendly)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-26*