Question from Patreon: Is there a limit to how much carbomer can be used in a lotion"
In the November Q&A on Patreon, Sawyer asked: Are there limits to how much carbomer can be used in a oil in water face cream" It seems to be a common ingredient in face lotions, and I love the idea of a cushiony lotion, but when I try to emulsify my gelled water phase with my oil phase the result is a separated mess.
Great question! There really isn't a limit, apart from not using so much that it becomes a big Jell-o-y mess. Having said that, I think that we can use too much, as you'll see in the next few examples.
If you look at this one, Velvet Care Lotion, you'll see that they're using 0.25% Ultrez 20 in the heated water phase, which seems like a tiny amount, but it is enough to give us that cushiony feeling we want.
This one, In-Shower Lotion, has 0.30% in the heated water phase, while this one, Party Time Shimmering Cream, has 0.40% in the heated water phase.
The lotions to which I've linked above suggest that the Ultrez 20 is sprinkled over the surface of the water phase, which is heated to 65?C to 70?C. The sodium hydroxide (neutralizer) is added after the two phases are combined, but when it's still hot.
So how much can we use" Here's what the company suggests...
Recommended polymer use level is formulation dependent. For surfactant-cleansing applications with low-to-moderate surfactant actives 0.8% to 1.0% is recommended. For use in emulsions and gels, 0.3 - 0.7% is recommended, depending on electrolyte content. Processing instruction...
Fuente de la noticia:
Point of Interest
URL de la Fuente:
http://swiftcraftymonkey.blogspot.com
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