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Mordanting Cotton With vs Without Tannin

In this video I test the difference tannin makes in mordanting cotton fabric for natural dyeing. I mordant 6 pieces of fabric in different ways, 3 of them using tannin, and then dye them with 4 natural dyes. I then do a light/wash fastness test on the dyed fabrics to see how the colors last. If you would like to see the results of this experiment as photos, check out my blog post - https://chromaticnatureclothing.com/2... Mordant ingredients I used: Sumach Gallnut Extract (Tannin) - https://chromaticnatureclothing.com/p... Aluminum Acetate - https://chromaticnatureclothing.com/p... Alum (Potassium Aluminum Sulfate) - https://chromaticnatureclothing.com/p... Calcium Carbonate (chalk) - https://chromaticnatureclothing.com/p... Synthrapol detergent - https://www.misterart.com/crafts/text... The dyes I used: Logwood - https://chromaticnatureclothing.com/p... Madder Root - https://chromaticnatureclothing.com/p... Osage Orange - https://www.etsy.com/listing/62246447... Sappanwood - https://chromaticnatureclothing.com/p... Music is by Borscht Porsche 00:00 - What this is about 01:28 - Laying out the experiment 03:12 - Mordanting 11:24 - Dyeing 15:41 - Logwood results 19:27 - Madder root results 23:23 - Osage Orange results 26:14 - Sappanwood results 30:01 - pH shifting problems 31:28 - Closing thoughts