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thicken formula using bentonite clay
how to thicken formula or as suspending agent using bentonite clay ?
how much % it need to effective ?
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6 Replies
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i want to suspend sulphur powder in face toner..
how much % bentonite clay it should be ?
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Bentonite is not a suspension agent. It will separate out in its own right. Also, Bentonite is quite aggressive on the skin. A carbomer would be more appropriate.
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I agree with @Belassi and the propensity for bentonite to be irritating.
You may also find the following excerpt from this recent article helpful:
The most common clays used for thickening water-based products are smectite, hectorite, and montmorillonite, with smectite being the most efficient at generating viscosity and suspending solids. These clays have a platelet shape with a negatively charged surface and positively charged edge, and they develop a house-of-cards-like structure when dispersed and hydrated in water.
Typically, the best performance is attained using high-shear processing to hydrate and structure the clay. Good suspending properties are due to the shear-thinning, thixotropic behavior of clay dispersions, which increases the yield value or resting viscosity of the formulation.
Clays are often used in combination with gums and organic thickeners, such as xanthan, carboxymethylcellulose or carbomers, to synergistically increase viscosity and the yield value. The viscosity and stability of formulations containing the mixtures are normally significantly better than those made with individual components.
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thanks for the reply..
actually i want to create similar product like 1 of my local produce “facial toner for acne”
the ingredient :
water, alcohol, sulphur, glycerin, zinc oxide, zinc sulfate, chlorpenesin, allantoin, triclosan, soium cholride, sodium sulfate, fragrance,
so in the ingredient which one is the suspensiun agent to suspend the sulphur ??
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That would be an OTC product and not one you could legally produce.
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triclosan is an environmental poison. I’m sorry but it appears to me that you don’t have sufficient knowledge or experience to be making a potentially dangerous product.
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