Re: Changing haircolour - henna or synthetic - need advice

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Posted by iris on December 20, 2004 at 12:49:59:

In reply to: Re: Changing haircolour - henna or synthetic - need advice posted by Nine on December 20, 2004 at 09:20:37:

: Ah, if the indigo can have a permanent effect then I don't think
: that's for me...
it can be really really permanent on some people. on me it usually washes right out,
especially at the roots.

but is your henna not permanent? I know it says on the boxes that it washes out or
fades within a couple of months, but on me it definately doesn't. someone on the
boards here has been growing out her henna for four years and it's still there.

: A couple of weeks of dark hair is nice but come
: spring I definitely want to go back to a lighter colour :)
:
: So, I suppose synthetic dye will be the way to go.
I'd really make that a temporary dye, if you're thinking in terms of weeks. if you use
semi-permanent or permanent you'll probably end up having to strip that out.

: Would it be safe
: to use it now? My last henna was, I think, two months ago, probably
: longer.
well, safe... synthetic dye is never really safe - you may want to click on the 'PPD dyes'
link (at the top of the forum page) and read there for a bit.

in terms of 'will your hair turn black, blue or green', that's impossible to tell because
you used henna from undocumented sources, and it's not at all unlikely that they
were compound henna's, i.e. henna with metallic salts in them. if you have metallic
salts in your hair, synthetic dyes will react with them in unpredictable ways, and you
may end up with green hair, or it may melt right off your head. so, always strand test.
I think that temporary dyes are less of a risk, but also there: strand test.

for more info on metallic salts in henna, read under 'compound dyes' here:
http://www.hennaforhair.com/science/whatsinit.html

this may also be helpful:
http://www.hennaforhair.com/science/fiatech.html

don't say I didn't warn ya ;-)!

iris

Follow Ups

Re: Changing haircolour - henna or synthetic - need advice Nine 13:38:37 12/20/2004 (1)
- Re: Changing haircolour - henna or synthetic - need advice Ravennaz 06:11:02 12/21/2004 (0)

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: : Ah, if the indigo can have a permanent effect then I don't think : : that's for me... : it can be really really permanent on some people. on me it usually washes right out, : especially at the roots. : : but is your henna not permanent? I know it says on the boxes that it washes out or : fades within a couple of months, but on me it definately doesn't. someone on the : boards here has been growing out her henna for four years and it's still there. : : : A couple of weeks of dark hair is nice but come : : spring I definitely want to go back to a lighter colour :) : : : : So, I suppose synthetic dye will be the way to go. : I'd really make that a temporary dye, if you're thinking in terms of weeks. if you use : semi-permanent or permanent you'll probably end up having to strip that out. : : : Would it be safe : : to use it now? My last henna was, I think, two months ago, probably : : longer. : well, safe... synthetic dye is never really safe - you may want to click on the 'PPD dyes' : link (at the top of the forum page) and read there for a bit. : : in terms of 'will your hair turn black, blue or green', that's impossible to tell because : you used henna from undocumented sources, and it's not at all unlikely that they : were compound henna's, i.e. henna with metallic salts in them. if you have metallic : salts in your hair, synthetic dyes will react with them in unpredictable ways, and you : may end up with green hair, or it may melt right off your head. so, always strand test. : I think that temporary dyes are less of a risk, but also there: strand test. : : for more info on metallic salts in henna, read under 'compound dyes' here: : http://www.hennaforhair.com/science/whatsinit.html : : this may also be helpful: : http://www.hennaforhair.com/science/fiatech.html : : don't say I didn't warn ya ;-)! : : iris
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