Jacquard Soda Ash Powder - Sodium Carbonate Washing Soda for Laundry & Dye Setting - Tie Dye Soda Ash - 5 lb Bag Soda Ash Dye Fixer - Super Washing Soda for Laundry & Fabric Dyeing

Super easy to use and seems to work great! Huge difference between no soak and soaking for 20-30 minutes. Definitely worth getting!

Good price compared to other brands. Use for tye dye so works great.

This JACQUARD soda ash powder is excellent to use in my flux mixes when melting metals and doing mineral testing. This soda ash absorbs impurities like iron when trying to purify metals in a high molten state and pulls them out into the slag. Easy to use in flux mixes and this multiuse product works good for many uses. Good find!

The color is so vibrant

Good for delivery and packaging.

If you're doing tie dye, put the soda ash and your undyed cloth or clothing into a bucket of water together BEFORE you dye your fabric,. This prevents the colors from running like they would if you did a soda ash bath after your cloth was already tie dyed. This product works insanely well. You just need to use it right! (If you're not doing tie dye, but instead you're just doing a dye bath where you fill a bucket with water and dye, you can add soda ash later and it's no problem) More review and tips on how to use soda ash below I've been using this soda ash for about a year now. It works REALLY well, pretty much any color you dye stays put after you rinse out the dye. Can be added to dye bath immediately or later depending on preference. Both methods lock in the color. I haven't tried this with natural dye, but I know that with MX dyes or RIT dye this works perfectly. You don't need a ton of it. maybe a quarter to half cup per medium sized (about a foot tall x foot wide bucket). so if you're not dying a ridiculous amount of yardage this bag should last a decent while.

- Soda Ash, Washing Soda, Sodium Carbonate, or Na2CO3 - several names for a multi-use substance. Just don't confuse it with sodium BIcarbonate, which is baking soda, and much milder than this soda ash. - Jacquard sells this as a fixative for its like of Procion/Fiber-Reactive dyes. What it does is "tie" the molecules of the dye to the cellulose of plant-based fibers, i.e., cotton, flax, and naturally-sourced rayons, which - if I recall correctly! - are basically re-polymerized cellulose that itself is obtained from various plants, especially bamboo, beech trees, and hemp. Beyond being a dye fixative, it has various cleaning applications. Note, though, that this isn't the same as the washing soda sold in the laundry aisle of the grocery; this is a "dense" form which is not hydrates, whereas the laundry form has several water molecules attached to each molecule of sodium carbonate. The end effect is that this dense form is stronger, therefore more basic/more caustic. So one does need to take precautions when using this dense form of sodium carbonate, since it *can* cause a chemical burn. At the same tome, though, the format of this sodium carbonate by Jacquard is about the safest possible, because the granules, while small enough to dissolve well, also are just heavy enough so that they won't be easily blown or lifted into the air, as a powder would. So it's harder to breathe-in any of the granules. But do wear good chemical-resistant gloves and eye-protection, and become acquainted with safety precautions. Jacquard's Soda Ash can be *very* useful, but it's important to be safe!

Really makes a big difference in tie dying if you soak your item in the soda ash, my shirts came out very bright!