Re: What exactly are terps doing?

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Posted by Paul on August 9, 2002 at 05:11:22:

In reply to: Re: What exactly are terps doing? posted by Maureen on August 8, 2002 at 18:19:46:

In playing around with a half dozen kinds of henna powders, I've been
unable to truly determine any significant variations in my results
from using paste that was terped during initial mixing and paste that
was terped 12-24 hours later. I'm not saying there was no difference -
just that any such differences didn't seem to be particularly
noticeable to me. I got dark, lasting stains from both methods.

I admit that I wasn't really judging the stains' durations or fade
times. I was actually looking for shortcuts to good results. :) I was
a henna novice and I was impatient about having to wait more than a
day to use my mixes. So that's when I started adding my terps up
front. And I concluded that my results were just as good as when I
waited hours to add my terps.

Maureen, I've been wondering about "the color dance", too. If there's
just one dye molecule, how is it that different hennas produce
different colors? Best theory I could come up with... really just
making a laughable guess... is that the molecules would slowly rotate
as they were bound to the keratins in the skin, and/or as they gained
oxygen atoms. And the light bouncing off/through those dye molecules
would therefore change color as the molecules changed orientations.
Sort of like a liquid crystal window tint mechanism. Well, alright,
enough fanciful speculations. But the color dance is very real. I get
vividly different colors between Malimba and Kimia and Tazii. No
question that each has distinct palettes, some (Kimia/Tazii) much
more varied than others (Malimba.)



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