Curcuma (Tumeric) infusion at different percentages

[szaza]

Annatto is my go to yellow, but it's so much fun to experiment with other colors! Also, side note.. I've had annatto fade on me after +-6months and it seemed to fade more in gelled soap than in ungelled soap. That's just an observation, I haven't really experimented with it.

Thought I'd do an update on the fading of the bright orange bar I made about a month ago.

The fading is not too bad considering I made a soap with the same infusion around the same time that went from almost neon orange to white within about a week luckily I only used curcuma infusion in a very small part of that soap.
Curcuma infusion is officially taken off my soapy list, though I might still try adding it to trace or lye water like @Belindasuds suggested (I still have more than I could ever use up in cooking and I do love the color)

Eta: since the weather is really bright, my lighting will also influence the color a bit, but it clearly faded.

 

[atiz]

I think I like the faded one better than the original It's like a water-color painting.

 

[Mobjack Bay]

Most of what I've read points to turmeric producing a peach color. Your last soap looks peach to me. I like it enough to have mixed up a turmeric infusion, but I'm guessing the odds are against it being a long lasting plant colorant based on the pigments it contains. According to this article: "Turmeric owes its characteristic yellow color to three major pigments; curcumin (50-60%), demethoxy curcumin (20-30%) and bis demethoxy curcumin (7-20%)" so not beta carotene or other carotenoids, as in annatto, which tend to be fairly stable. According to this FAO pdf, "It [curcumin] is stable at high temperatures and in acids, but unstable in alkaline conditions and in the presence of light.

 

[szaza]

unstable in alkaline conditions and in the presence of light.

That explains a lot about how curcuma behaves in soap. Thanks for sharing that!