Hydroxycapric Acid
INCI: HYDROXYCAPRIC ACID
Reviewed by Rosie · Last updated 14 Aug 2026
A fatty acid derivative that supports skin's natural moisture balance and conditioning
Best For Skin Types
All, Dry, Sensitive
Addresses
Usage Frequency
Daily
What Is Hydroxycapric Acid?
Hydroxycapric acid is a saturated fatty acid commonly derived from coconut oil or synthesised in a lab. It belongs to a family of compounds called medium-chain fatty acids, which are known for their skin-conditioning properties.
In skincare formulations, hydroxycapric acid is used primarily to improve how a product feels on the skin and to help maintain hydration. It works by forming a conditioning layer on the skin's surface, supporting the skin barrier's natural lipid composition.
How It Works
Hydroxycapric acid is a lipophilic (fat-soluble) ingredient that integrates into the skin's outermost layers. Because it's a fatty acid, it aligns with the skin's own lipid composition, which includes ceramides, cholesterol, and fatty acids.
By supplementing these natural lipids, the ingredient helps maintain the skin barrier's integrity and reduces water loss through the epidermis. This is particularly relevant for people whose barrier function may be compromised due to dryness, sensitivity, or environmental stress.
Clinical Evidence & References
Research specifically examining hydroxycapric acid in isolation is limited. However, medium-chain fatty acids as a class have been shown in several studies to support skin hydration and barrier function when applied topically.
The evidence for this ingredient is strongest when considered as part of a broader lipid profile in skincare formulations. More targeted clinical data would help clarify its individual contribution to skin health outcomes.
How to Use
Hydroxycapric acid is typically incorporated into moisturisers, cleansers, and serums at low concentrations. It works best as part of a complete formulation; look for products that combine it with other humectants (like glycerin) and occlusive agents (like dimethicone or oils) for optimal hydration support.
Safety & Precautions
Frequently Asked Questions
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