Foundation cream formula - Chemists Corner

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Formulating

Foundation cream formula

Posted by Heba on December 1, 2017 at 2:45 pm

Hi there
I’m working on a foundation cream formula and upon mixing all the ingredients and just after adding the emulsifier (which is polymeric one) the color completely changed <span>:sweat:</span>
Althougnatural it was perfect (natural peige) just before that step
So, what do you think the problem is?!
Thanks in advance

Dr Catherine Pratt replied 6 years, 5 months ago 5 Members · 12 Replies
- formulating
12 Replies

Microformulation

Member
December 1, 2017 at 4:56 pm

You would need to post the Formula for anyone to comment. Otherwise there are just so many possible issues and it would difficult to assess what is occurring.
Bobzchemist

Member
December 1, 2017 at 6:41 pm

Mark is right, we’d need to see the formula.

Typically, this sort of problem is caused by insufficient pigment wetting, but there are a half-dozen other things it could be also.
Heba

Member
December 1, 2017 at 10:52 pm

Glycerin 20%

Propylene glycol 10%

Water 40%

CPS 10%

Oils,panthenol,collagen

Pigments (titanium dioxide,iron oxides)

N.B:emulsifier used is polymeric emulsifier
Here’s the full formula
First I add glycerin and Propylene glycol to the Pigments ,lavigate them well then I added the rest of the ingredients
Bobzchemist

Member
December 3, 2017 at 1:54 am

I don’t see a wetting/dispersing agent for the pigments, or a suspending agent for them, or a preservative system . How did you develop this formula? What do you use to grind the pigments?
Heba

Member
December 3, 2017 at 8:48 am

Dispersing agents are glycerin and Propylene glycol
Preservatives are propyl and methyl parapen
Pigments are already grinded (I had them ready to use)
Bobzchemist

Member
December 3, 2017 at 11:55 pm

There you go, then. Glycerin and Propylene Glycol are very bad dispersing agents for pigments. You need a surfactant (or two).
Heba

Member
December 5, 2017 at 6:36 am

Thank you so much Mr Bob for your precious reply
What are your suggestions for the surfactants please?!!
Heba

Member
December 5, 2017 at 7:12 am

And what about polysorbates?!!
Heba

Member
December 16, 2017 at 10:37 pm

؟ ؟ ؟ ؟
Bobzchemist

Member
December 17, 2017 at 12:59 am

Search “cosmetic aqueous pigment dispersant”
MarkBroussard

Member
June 9, 2018 at 12:18 pm

Dr. Pratt … perhaps you are new here. But, the protocol is that formulation service providers are to not hawk their services in discussion threads.

It is particularly annoying to click on a thread only to find that it is an old (ie: “dead … no longer current”) thread that you have bumped from a year ago to advertise your services.

Please refrain from doing this in the discussion threads. Just e-mail the poster directly if you want to offer them your services.
Dr Catherine Pratt

Member
June 11, 2018 at 1:27 am

Yes I have already gotten into trouble and doing my penance for 3 days now, to be honest I didn’t even realise it was annoying anyone!? I must cut back on the peroxide in my hair, all that oxygen made me far too enthusiastic!

My deepest apologies to everyone I have annoyed Catherine