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Sodium Hydroxide: LYE - for Soap Making. Sodium Hydroxide, or Lye, is the chemical that induces saponification with fats and oils to create that magnificent thing called soap! Our lye is now in flake form! This is a huge improvement because they don't cling to you and your tools due to static electricity like the pellets do. The flakes are a little less pure (97% instead of 99%) but this small variation does not make a difference in soap recipes and saponification rates.Please be sure to educate yourself on the safety precautions and proper handling of Lye before using this ingredient. Our Lye is 32 oz. by volume and about 27 oz. by weight.

How much lye do you need for your soap? Try our lye calculator.

NOTE:  This item requires you to agree to the Hazardous Materials Waiver*.  This waiver will be provided electronically when adding the item to your cart.

* Click here to read the Hazardous Materials Waiver.

Flashpoint:  This item will ship Ground Only regardless of the shipping method you choose at checkout. It cannot be shipped outside the lower 48 U.S. states or USPS.

Botanical Name:   Sodium Hydroxide
Common Name:  Sodium Hydroxide 


Average Rating:
(based on 37 reviews)

Showing 1 - 5 of 37 Reviews:

by Crystal
on 5/14/2015
I was really pleased with lye in flake form. Dissolved well in water and in milk, though the milk took longer. I have no complaints. I will be ordering more!
by Jessica
on 3/11/2015
2 Pounds Went a LONG Way!
I got a bottle with my starter kit and it lasted me through 17 pounds of soap! I was super happy with that and have subsequently ordered two more bottles. I've spent $10 on worse things.
by JoAnn
on 2/20/2015
I don't like this lye.
I am new to soaping and have used the beads of lye with good results and only minor fumes..This lye came with a soap kit and I don't like it. It releases a lot of fumes compared to the beads and did not fully melt in the water so I had to strain the lye which was scary. I don't usually wear a respirator mask but I had too with this lye and it made a lot of dust on my scale. I won't use it again.

Reply from Bramble Berry
Hi JoAnn!  I'm sorry this product wasn't your favorite.  We like using the flakes because they're easy to measure and there is less chance of them poofing up in the air when you measure it out. In our tests and recipes, we've found it dissolves fully.  Though, because our Lye comes in large flake farm it does take longer to dissolve and sometimes more stirring is required.  I will email you personally to discuss this further.

by Cynthia
on 1/22/2015
Lye Flakes
Initially I was concerned about using lye "flakes" with (milk cubes). During the first few additions of lye, the "flat" lye flakes can stick to the frozen cubes and sides of the container, and with the white milk, they also (hide). Once I understood this, I make sure I scrape/check the bottom/sides of my container for un-dissolved lye and stir, stir, stir until it's 100% obvious that everything IS melted. The process goes faster after those first few lye additions, of course, because you have the heat of the lye helping to dissolve the flakes faster. I LOVE using this product now!
by Jeri
on 1/14/2015
Lye to me baby
Hi I started making soap like everyone els using the beaded lye. It was hard for me to measure out and I hated the beads of lye. When Brambleberry made this lye I thought why not try it . What do I have to lose right ..It looks easy to use and measure out . I also loved the price it didn't coast that much ether. So I bought two. They came to me in a neat package and I unpacked Two lye bottle I grabbed my measuring cup and my scale to see if I could get two oz. and I did it was easy for me to make soap with this lye and I get the right amount all the time. thank you brambleberry. My soaps turn out beautiful all the time now .
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