Ingredient
Isostearic Acid
What is Isostearic Acid?
Isostearic acid is a branched-chain fatty acid that is typically produced by the isomerization of oleic acid. This process involves the rearrangement of the molecular structure to create a fatty acid with unique properties.
It is commonly used in cosmetics and skincare products, such as lip care, sunscreen, and makeup, due to its ability to enhance texture and provide moisturizing benefits. Scientific evidence shows that it is generally safe for use on the skin, and it helps to stabilize and thicken formulations without causing harm.
When you see isostearic acid on a label, it indicates that the product may offer improved textures and enhanced feel, as this ingredient contributes to the spreadability and absorption of creams and lotions.
Commonly found in: Lip Care, Sunscreen, Makeup, Moisturizers, Lotions
Benefits
- Enhances the texture and stability of cosmetic formulations.
- Provides moisturizing benefits to the skin.
The FDA considers isostearic acid safe for use in cosmetic products without specific restrictions.
Research indicates that isostearic acid is effective in enhancing product stability and moisturization without significant health risks.
Isostearic acid is typically derived from plant sources, making it suitable for vegan users.
Sources: Cosmetic Ingredient Review Expert Panel on Isostearic Acid
Scout's take
Fatty-acid emollient / emulsifier — conditions skin, low concern.
The case against
There are minimal risks associated with Isostearic Acid, though it may cause irritation in very sensitive individuals.
from the analysis of CeraVe Sunscreen Stick SPF 50There are minimal risks associated with Isostearic Acid, primarily related to potential sensitivity in rare cases.
from the analysis of Cocokind Daily Sunscreen - SPF 32The case for
It helps maintain the stability and consistency of the product, ensuring even application.
from the analysis of CeraVe Sunscreen Stick SPF 50It helps to improve the texture and stability of the product.
from the analysis of Cocokind Daily Sunscreen - SPF 32More from Scout's analyses
Isostearic Acid is a fatty acid used as an emulsifier and thickening agent in cosmetics. It helps stabilize formulations and improve texture. It is generally considered safe for use in skincare products.
from the analysis of CeraVe Sunscreen Stick SPF 50Isostearic Acid is used as an emollient and thickening agent in cosmetic formulations. It helps to stabilize and thicken the product. It is considered safe and suitable for all skin types.
from the analysis of Cocokind Daily Sunscreen - SPF 32Found in 5 products
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