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🚿 Clear drains, craft soaps, and clean green—bead your way to brilliance!
ComStar Pure Lye is a 1 lb pack of 99% pure sodium hydroxide beads designed for powerful, eco-friendly drain clearing and soap making. Its unique bead form dissolves quickly without clumping or static, making it a favorite among professional and hobbyist soap makers. Safe for all pipe types and septic systems, this odorless, biodegradable formula effectively breaks down grease, hair, and roots while protecting fixtures and the environment.





| ASIN | B00PKNBK24 |
| Best Sellers Rank | #21,754 in Health & Household ( See Top 100 in Health & Household ) #10 in Commercial Drain Openers #51 in Chemical Drain Openers |
| Brand | ComStar |
| Brand Name | ComStar |
| Customer Reviews | 4.6 out of 5 stars 6,948 Reviews |
| Global Trade Identification Number | 00024924305003 |
| Included Components | drain opener |
| Item Type Name | Pure Lye Drain Opener |
| Item Weight | 16 ounces |
| Liquid Volume | 1 Liters |
| Manufacturer | ComStar International, Inc. |
| Product Benefits | Clears drains quickly, safely, and effectively with a unique bead shape and non-offensive odor. |
| Scent | odorless |
| State of Matter | Solid |
| State of matter | Solid |
| UPC | 024924305003 |
| Unit Count | 16.0 Ounce |
S**T
It will clear your drain
I have four bathroom vanities, one kitchen sink (open drian and garbage disposal sides) as well as a utility sink. In addition to multiple shower drains, a soaker tub drain and a jetted garden tub drain. It's easy to see that with all of these drains, something will eventually need your attention. Sink drains provide relatively easy access to the trap and with a modest amount of effort they can be cleaned out manually. If however the clogg goes far beyond the trap the repair gets a little more intense. Of course shower and tub drains typically don't have easy access to their drain plumbing. This is the answer for these scenarios. Not only will it open up the drains, it will do so quickly and as an added benefit it will help to keep things downstream from clogging in the first place. I have also found that it works well in laundry drains where soap scum and fabric softener buildup can become problematic. It can be used preventatively in utility drains such as HVAC A Coil condensate drains. Who wants to find their AC system shutting down because the condensate tray is backing up? Or worse yet, find out that the system didn't shut down but instead overflowed onto your carpet, hardwood or even worse, into your ceiling if the unit is upstairs or attic located. This stuff works well for opening clogged drains quickly and preventing clogs when used as a maintenance aid. I typically by this in either the large container or in two packs as I want to have it on hand when needed. I also restock quickly when low.
S**A
AMAZING PRODUCT!! WELL WORTH THE PRICE!!
I was amazed how this product worked on my slow moving bathtub/shower drain! I had tried snaking it, plunging it, liquid drain cleaner...nothing helped until this. I watched the videos people posted and thought what the heck, I'll give it a try. Ran hot water for a minute, waited 10 minutes, poured 1/4 cup directly into the drain, added more hot water, saw 1 bubble (burp) waited, repeat ran hot water 1 minute, 10 minutes later added the beads, little more hot water...finally drain opened up completely. Will use as a monthly maintenance to keep functioning.
J**N
High purity, perfect for soap making
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!
L**A
Amazing!!!
This stuff works like magic!
A**E
Works pretty well with boiling water and plunging afterwards
I didn't get the benefit of hearing a "whoosh" or anything so incredible when I used this on my bathroom sink drain, which is about a century old, which has been getting backfilled with stagnant water when I leave the sink on for more than 5 seconds. After first trying a drum auger I found with no luck, I decided lye might be the solution and used it as part of a trifecta of clog removal solutions. The clog was very obviously deep in my wall instead of being immediately accessible and I'm just a typical 30-year-old with no knowledge of plumbing really... For me, there was no explosion or craziness, but I did don a mask and a full-length coat just in case something crazy did happen (and you should as well if you buy this). After the first pass through with the lye, I didn't notice any change, so I decided to do it again, this time mixing it in a plastic container with the hot water in advance and then pouring it down the drain all together (Do not do this unless you have the gloves and the protective glasses!) and letting it sit for a few hours. When I poured hot water into the sink after letting the lye sit for about 6 hours, it immediately backfilled and I was really bummed out, but I decided to actually *boil* some hot water and pass that through the pipes. A lot of people say not to do this if your sink has a PVC pipe in it but I passed about 10 quarts total of boiling water and started seeing a bit of an improvement at that point. I finished everything up by allowing the sink to fill some and using a plunger on the drain. At this point, all sorts of disgusting black stuff was coming up... but the sink finally returned to a somewhat functional state. I'm sure this clog pre-dated me living in my house and unclogging it felt like a serious effort. In retrospect, I would have probably just paid for a plumber to come out because it ended up eating my entire Sunday. On the other hand, I would recommend the lye as a PREVENTATIVE maintenance tool for stubborn and clog-prone sinks. Personally, I think the plunger technique was the most effective, but this lye definitely jumpstarted the process. I'm guessing if you don't live in a super old house, this stuff will do the job much more easily... in which case, you should buy this instead of Drano because it's way cheaper, but you should also try not to be a Darwin Award winner and maintain a healthy fear of lye, because the stuff is really dangerous to play around with if you're not taking all the precautions.
C**L
Works great!!!
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!
W**E
Why did I wait so long to try this (have had a bottle since 2018)
I bought this is 2018 and never used it. Why? I have no clue, maybe I didnt believe the hype? who knows. Fast Forward 7 years, I just moved into a new house (on septic), of which the master bathroom shower is clogged, pretty much have to stand in an inch of water when you shower, which is not nice. I tried this stuff call Drain CLR or something like that. You pour 2-3 ounces down the drain for 5 days. Well this did absolutely nothing. Then I was going through moving boxes in my garage when I stumbled upon this and I figured, what the heck, I remember people raving about this, let me try it. I used it exactly as the directions on the bottle told me too, Ran steaming hot water down the drain, waited for all the water to clear and then poured 3 ounces down the drain. I had a glove on one hand and I did have to move it around for it to all go down the drain, but then I left it for 20 minutes. After 20 minutes, I came back, turned on the steaming hot water and my shower no longer was clogging up.....WHAT? Wow! No idea why I waited so long to try this, but i am a true believer of it now. This stuff works QUICKLY and is septic safe! Love it!
S**E
I'm totally surprised ... and impressed! It WORKED!
I read through other Amazon reviews about this product, so decided to give it a try. I have to say, I'm totally impressed! I had a bathroom drain that was nearly completely clogged up, mostly with hair. Ordinarily, I'd have just pulled out the drain plug, dug the hair out with my hemostats, and been done with it. But this particular plug is unnecessarily difficult to get out, so I thought I'd try something else. My first attempt was with some sort of drain cleaner. Directions said to use half of the bottle, I think there was maybe 1/3 of the bottle left, so I used that. Poured it into the bathtub drain, left it overnight, took a shower the next day and saw no improvement whatsoever. It took 1 inch of water in the bathtub about 40 minutes to drain. Expecting the Lye to perform no better than my drain cleaner, poured it down the drain 4 times, rather than "just" following the directions. I reasoned that perhaps most of the solution would drain PAST the hair clog, and NOT dissolve the clog? So, on the first night, I estimated doing what the directions said, 1 cup of Lye dissolved into 1 to 1 1/2 cups of water. Poured it down the drain. Left it overnight. Next day, made up a small solution - maybe half of what the directions suggested, poured it slowly into the drain. Did that, again, that evening, and, again, the next day. Four days later, I took a shower in that particular shower, and it drained just fine, I couldn't believe it! So, now I'm wondering how much the lye actually worked after only ONE administration, rather than 4. But I'm glad and quite impressed that it really did work. In total, I used about 2/3 of the bottle, with plenty left over for other drains in the house. Of note: Lye is not the nicest stuff to use or have around in your house. I found out that when you mix it with water, it generates heat. I could easily feel the heat through the plastic bucket that I used to mix the solution. Lye will chemically burn your skin, to be careful. Don't let it touch your skin, and be especially careful not to get it into your eyes. Also, according to wikipedia, Lye can pull enough water out of the atmosphere to turn itself into a liquid solution (which generates heat) and can potentially ignite other flammable substances (paint? gasoline? paint thinner?) So I'll use ALL of the remaining Lye in my other household drains, and NOT store it in the house or in the hot garage. Knowing full well that the next time the drain even STARTS to drain SLOWLY, the solution is only one quick visit to Amazon and a couple of days away.
TrustPilot
1 周前
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