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Polymer Rehydration
Hello @all,
I have a question about rheology modifiers. I am trying to create an oil-in-water emulsion, high viscosity gel cream type that when applied to the skin feels as light as dimethicone and will not form a slimy film on the skin when in contact with sweat. Here are the rheology modifiers and polymeric thickeners I have worked with - cold processible only:
1. Sepiplus 400
2. Sepimax Zen
3. Cellulosics
4. Xanthan gum and the likes.
5. polyurethane-64
What I do is to use it and then after a minute wet my hands with water to mimic sweat though I know that sweat is made up of different things. But, what I noticed is that, when they are applied to the skin, they are nice but when water comes in contact with them, there’s this slimy residue that is noticeable. This is not ideal in humid tropical weather.
Right now, I am into trying Aculyn Siltouch, but I want to know if any of you have experience using this material? Does it create a slimy form or rehydrate when in contact with water again or sweat? Any recommendations?
Thank you in advance.
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3 Replies
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If you don’t want the slime feeling - you need something that is not water-soluble. All water thickeners are water-soluble and will react with the sweat.
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@fareloz: thank you so much for your reply.
yes. that is what i am thinking as well. Polymers that have high affinity to water or water swellable polymers will always swell in the presence of water. So, I am trying to find a rheology modifier that does that. I am thinking of HEUR systems or veegum clays. But I am not quite sure about it.
Any recommendations on this? I would highly appreciate your input on this.
I look forward to your response.
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This reply was modified 3 days, 15 hours ago by XYZ123.
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This reply was modified 3 days, 15 hours ago by
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Hard to believe that polyurethane would behave like that. The others, yes, especlaly xanthan and a celluosic. Try Veegum with a very little amount of carbomer. This will give a cream-gel rheology with a fast break on your skin. Adding some cetyl alcohol will help “de-slime” also.
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