Where to buy citric acid?

I tried grocery stores and pharmacies, endured many blank stares.  So I finally got on line and ordered a 5 pound jar of citric acid from Amazon.  We wonder why businesses like Amazon survive and local places don't.  Because the local businesses don't carry what we need half the time!

Loopgram: Citric Acid replaces Vinegar

I got tired of hauling huge jugs of vinegar and pouring (should I say slopping) vinegar into my jars when I was dyeing.  So I bought a 5 lb. jar of citric acid crystals and have been experimenting with amounts.  The acid dye process works when you infuse the dye molecule into the wool fiber.  This is a chemical process that is done with a mild acid like vinegar or citric acid, which creates a special chemical bond between the fiber and the dye color molecules.

Citric Acid is a bitter acid derived from citric fruits and it is used in everything from cosmetics to flavorings for food.

Citric acid is SO EASY to use I recommend switching immediately.  It is more cost effective and has no mess at all. And I found that the dye water cleared much better than it does with vinegar.

1 tsp. Citric Acid per 1/4 yard of wool

If you are trying to dye really dark wool (as in create a really dark value so there is a good amount of dye you are trying to infuse into the wool fibers), double this amount