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Why Yellowish in cream ?
I made a cream with the following formulation :<div>
Water Qsp
Citric acid to pH 5
Allantoin 0.1%
EDTA 0.1%
MPG 1%
Dimethicone 350.:0.5%
Almond sweet oil 1.5%
Shea butter 1%
Perolatum 5%
Paraffin oil 1.5%
Sabowax AE 5%
Gms se 0.5%
Cetearyl alcohol 4%
Sensicare c1060 0.6%
Perfume 1%
I was making the following formulation
Water Qsp
Citric acid to pH 5
Allantoin 0.1%
EDTA 0.1%
MPG 1.5%
Dimethicone 350.:0.5%
Shea butter 1%
Perolatum 8%
Paraffin oil 1.5%
Sabowax AE 4%
Gms se 0.5%
Ceteareth 20: 0.5
IPM 1%
Cetearyl alcohol 3%
Sensicare c1060 0.6%
Perfume 1%
Both contain the same perfume the second one didn’t come yellowish however the first did from the first month.
Any explanation please especially the two Formulations aren’t too far.
@Perry44 @ketchito @chemicalmatt @Abdullah @caf @ozgirl @Graillotion @ngarayeva001 @Paprik
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9 Replies
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Sorry - I can’t help.
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@PhilGeis whatever thanks for your reply.
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The main difference seems to be the inclusion of sweet almond oil in the first formula but not the second. Is it possible that the sweet almond oil is oxidizing over time?
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thanks @ozgirl for you reply the differences are :
1)As you said Sweet almond oil in first not in second
2) Emulsifiant system is 5% sabowax AE + 0.5% GMS SE + 4% Cetearyl alcohol in first while 4 % sabowax AE + 0.5% GMS SE +0.5% ceteareth 20+ 3% Cetearyl alcohol in second.
3) IPM is in second not in first4) 1% MPG in first while 1.5% MPG in second
My doubt was in sweet almond oil however i have other formulations with 3% and more sweet almond oil without any yellowish .
My doubt that maybe the perfume starts to change in function of time or any other ingredient , the summmer is too hot so it cause that…
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My first question is what’s MPG. Also, it’d be good to check if you used the same batch for these ingredients:
- fragrance (oxidation?)
- sensicare c1060 (it has piroctone olamine and it can switch color)
Try also to increase the chelant and add a radical scavenger like Tinogard TL which you could add as a premix with the fragrance.
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thanks for answer @ketchito
1)MPG: is monopropylene glycol
2)for the ingredients are not from same batch always they changes because the huge consumption in production.
3) i use sensicare c1060 in many creams and it didn’t cause yellowish.
4) how much tetra EDAT can i use to have better protection without effecting the texture of cream?
5) Shea butter is same batch and i have formulations without higher level of shea butter without yellowish.
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Also check if you used the same batch of shea butter (refining differences could aso lead to different hues).
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Do you have an oven to do a knock out test? My main suspects are shea butter (refining can varied between batches) unless you’re absolutely sure you used the same batch, your fragrance (to which I’d add some Tinogard TL in case that was the issue) and your preservative (piroctone olamine could react with some metal traces).
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