Best For Skin Types
Dry, Mature, Sensitive
Addresses
Usage Frequency
Daily
Hydrogenated Soybean Oil products at Skintique
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What Is Hydrogenated Soybean Oil?
Hydrogenated soybean oil is a vegetable oil derived from soybean that has undergone hydrogenation—a process that adds hydrogen to stabilise the oil and increase its melting point. This makes it solid or semi-solid at room temperature, which is why it's used in skincare formulations rather than as a liquid oil.
In skincare products, it functions primarily as an emollient and skin conditioning agent. Its role is to soften the skin surface, reduce transepidermal water loss, and improve the texture and spreadability of formulations. It's found in roughly 0.2% of skincare products, often in creams, balms, and occlusive treatments.
How It Works
Hydrogenated soybean oil works by forming a protective barrier on the skin surface. Its emollient properties allow it to fill small gaps and crevices in the stratum corneum (the skin's outermost layer), creating a smoother appearance and reducing visible dryness. This occlusive function slows the rate at which water evaporates from the skin.
In formulations, it also improves spreadability and texture control by adjusting viscosity—the thickness of the product—making creams and balms easier to apply without altering their stability.
Clinical Evidence & References
Evidence on hydrogenated soybean oil itself in skincare is limited. However, research on the effects of hydrogenated vegetable fats on skin has shown some relevant findings. Studies in animal models suggest that trans fatty acids (present in hydrogenated fats) may increase skin's susceptibility to oxidative stress, particularly when combined with UV exposure, and may impair skin barrier function and antioxidant defences.
That said, these findings relate to systemic intake of trans fats rather than topical application, and the concentrations used in cosmetics are typically very small. More research would be needed to determine whether the trace amounts in skincare products pose a meaningful concern for skin health.
Published Research
How to Use
Hydrogenated soybean oil is typically incorporated into finished products rather than used as a standalone treatment. If using a product containing this ingredient, apply it as directed—usually to damp skin to help seal in hydration. It works well in layering routines, particularly as an occlusive step before or after lighter serums or hydrating treatments.
Safety & Precautions
Frequently Asked Questions
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