The Newly improved Ascorbyl Tetraisopalmitate Oil is a lipophilic derivative of ascorbic acid that is oil-soluble and more stable than other forms of vitamin C. It is made by combining ascorbic acid with a fatty acid known as palmitic acid. It’s also known as ascorbyl-6 palmitate, and it is effective up to a pH of 6.
The palmitate portion of this ingredient lends it hydrating properties many other forms of vitamin C do not have. Ascorbyl palmitate is considered a stable form of vitamin C, but research has shown other forms possess greater stability and skin can more freely convert those forms to ascorbic acid. However, a comparative study showed that ascorbyl palmitate maintains adequate stability in different types of emulsions when it is encapsulated.
HOW TO USE
INCI: Ascorbyl Tetraisopalmitate
Use rate: 0.5 ~ 7% (Up to 10%)
Appearance: Colourless to pale yellow liquid
Solubility: Water-insoluble; Soluble in oil and ethanol
Temperature Sensitivity: Avoid heating above 40°C
pH Stability: 4-6 (Best at pH 5.5)
Storage: Store in a cool, dark, and dry place. Do not freeze.
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