Sorbitan Stearate (Liposorb S)
What is Sorbitan Stearate?
Sorbitan stearate can be found in berries and other plant debris. To make the molecule, a sugar alcohol called sorbitol is mixed with fatty acids from vegetables to form a natural alcohol.
Sorbitol can be found in corn, plums, and a range of other foods. When sorbitol and fatty acids are combined, a new molecule is produced that retains the humectant properties of sorbitol while also making the alcohol an effective moisturiser and softener for the skin.
|What is it?||Liposorb S is a low HLB emulsifier that is typically combined with a high HLB emulsifier in oil-in-water emulsions.|
|Appearance||White to tan waxy solid|
|Solubility||Insoluble in water|
|Melting point||57.0 °C|
|Why do we include it in formulations?||Sorbitan stearate is a thickening and stabilising emulsifier used in cosmetics.|
|How to work with it?||It should be melted into items, thus include it in your heated oil phase.|
|Applications||It's mostly used as an emulsifier to keep water and oils blended together. Nonionic surfactant with emulsifying, dispersion, and wetting characteristics.|
|Strength||Sorbitan stearate is a surfactant made out of the sweetener sorbitol and the naturally occurring fatty acid stearic acid.|
|Weaknesses||If the concentration is high enough, it might cause mild skin irritation.|
|How to store it?||Stored in a cool, dark and dry place.|
|Shelf life||Sorbitan stearate has a two-year shelf life when properly stored.|
|Type of ingredient||Emulsifying, dispersion, and wetting properties of a non-ionic surfactant.|
|Main benefits||effective moisturiser and softener for the skin.|
|Who should use it||All skin types|
|How often can you use it?||Daily|
|Works well with||Most of the ingredients|
|Doesn't work with||Sorbitan Stearate does not react negatively with any specific substances|
|How to use||Added to your formulation during the oil phase.|
Mechanisms of action
Many lotions and other skin-care products contain sorbitan stearate as an ingredient. It functions as a humectant, binding moisture, thickening the product, and stabilising the water-oil mixture.
Because of its stabilising effect, sorbitan stearate is known as an emulsifier; it allows two liquids that would ordinarily not mix to produce a stable mix known as an emulsion.
When sorbitol and fatty acids combine, a new molecule is formed that retains sorbitol’s humectant qualities while also making the alcohol a good skin moisturiser and softener.
Benefits of Sorbitan Stearate
- Sorbitan stearate is included in a wide range of lotions and other skin-care products.
- It works as a humectant, attracting moisture, thickening the product, and stabilising the water-oil mix.
- Sorbitan stearate is known as an emulsifier because of its stabilising effect; it allows two liquids that would otherwise not mix to form a stable mix called an emulsion.
Side effects of Sorbitan Stearate
Sorbitan stearate is a gentle substance that can be used topically and has a low risk of side effects.
How to use it in formulation?
The ingredient is also found in several cosmetics. Sorbitan stearate can be used as a binding agent in cream-based cosmetics like cream eyeshadow or liquid foundation.
It can also be used as a moisturiser to combat the drying effects of various cosmetics and the flaking caused by wearing makeup for long periods of time. Some sorbitol-based emulsifiers are used in lotions and salves for medicinal purposes, such as athlete’s foot treatments.
Works well with other ingredients
Sorbitan Stearate works well with almost all skincare ingredients.