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Foam stability over time
I’m making a foaming hand soap and I’m wondering if my ratio of surfactants will hold up over time
32% - SLES (25% active)
4% - Coco Glucoside
2% - Cocamidopropyl Betaine
0.025% - hydroxyethylcellulose
4% - poly 202% fragrance
The rest is water, preservative, color
My question is: will this ratio of surfactants hold up, or will the foam collapse over time?
I added the HEC because it is film-forming and adds a nice feel to the foam. I am not sure if it would affect the foam performance over time. -
8 Replies
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With that amount of fragrance and polysorbate 20, I see your foam will not be as good as it could. I haven’t seen cleansing formulas with more than 1% of fragrance, the usual levelbis around 0.5%. Polysorbate will for sure impact (negatively) foam and viscosity. If you reduce your fragrance, you won’t need as much polysorbate. Also, you could increase your betaine and even add something like Cocamidde DEA.
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It this to clean very dirty hands? Or regular bathroom hand soap?
I believe the surfactant level (~10%) is too high for hands only.
Are you sure 0.025% of HEC is doing anything? I don’t see any neutralising agent? What is the method here? For surfactant systems you would be better using HPMC.
As Ketchito said, 2% fragrance is insane. Have you checked IFRA regulations? If your fragrance does not perform well in lower inputs, change that.
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I’m using HEC to make this foaming hand soap feel nicer; I wanted a more moisturizing feel without sacrificing foam performance or clarity. I haven’t used HPMC in a formula before, but willing to try if it is more compatible with the system.
The product I’m making is very fragrance driven. After solubilizing with DPG, my fragrance percent comes out to around 1.3% which is still high, but… like I said, fragrance is key to the customer ¯\_(ツ)_/¯
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At this input 0.025% it won’t do much I am afraid.
Swap for HPMC, this boosts foam and also thickens the system. !! However, if I am not mistaken you cannot use glucosides nor Polysorbate. It will break it. !! Also different types require difference processing method.
If you want a nice feel use some Polyquaternium-7.
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So I tried polyquat-7 and it made the formula cloudy. Using HEC has been successful for film forming, making a soft feel on the skin vs. no HEC in the formula, which had no conditioning on the skin
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There’s a reason why companies don’t use that much fragrance in these type of products, and it’s the risk of skin irritation/sensitization. Will you perform a clinical study in a certified lab, to check your product is safe in use?
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Hello Everyone,
What is the goal of poly 20 please?
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Solubilise the fragrance, also as a mildness additive.
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