This is a summary of research papers and studies
from the National Center for Biotechnology Information (NCBI)
ABOUT SESAME SEED OIL
Sesame seed oil, derived from the seeds of Sesamum indicum, has been a staple of traditional medicine for centuries, particularly in Ayurvedic and Chinese traditions, where it is revered for its ability to nourish the skin, protect against environmental damage, and treat hair-related issues. Modern scientific inquiry confirms these traditional uses, revealing a complex chemical profile rich in lignans, essential fatty acids, and vitamins that provide significant therapeutic benefits for the skin.
Properties
The efficacy of sesame seed oil is largely attributed to its unique oil-soluble lignans, specifically sesamin, sesamolin, sesamol, sesaminol, and episesamin. Beyond its lignan content, the oil is a potent source of essential fatty acids. It contains high concentrations of oleic acid (35-50%) and linoleic acid (35-45%), along with palmitic and stearic acids. Linoleic acid, an omega-6 fatty acid, is the most abundant polyunsaturated fatty acid (PUFA) in human skin and is critical for maintaining the structural integrity of the skin barrier. Sesame oil is also enriched with Vitamin E (tocopherols), B-complex vitamins, and essential minerals such as calcium, magnesium, and phosphorus.
Functions
The topical function of sesame oil consists of:
Antioxidant Defense
Sesame oil acts as a powerful antioxidant. Its lignan components, particularly sesamin, scavenge free radicals and inhibit lipid breakdown. Sesamin can be metabolized into highly active antioxidative compounds t protect against oxidative stress.
Enzymatic Inhibition
One of its most specialized functions is the inhibition of the type 1 5α-reductase enzyme. a key driver of androgenic alopecia (hair loss).
Barrier Support and Occlusion
As a semi-drying oil, sesame oil functions as an emollient. It forms a barrier on the skin's surface, which minimizes transepidermal water loss (TEWL) and enhances deep hydration.
Benefits for the Skin
Deep Hydration and Treatment of Dry Skin
Sesame oil is highly effective for treating dry skin. Its fatty acid profile allows it to provide deep hydration and support the skin’s natural lipid matrix. Research indicates that applying sesame oil significantly enhances the hydration levels of the skin barrier, making it a promising natural alternative to synthetic moisturizers.
Anti-Inflammatory and Soothing Relief
Because of its anti-inflammatory and antimicrobial properties, sesame oil is used to treat various inflammatory skin conditions, including eczema, psoriasis, and rosacea. It helps calm irritated skin, reduces redness, and eases the discomfort associated with inflammation. Studies have demonstrated that sesame oil-based emulgels suggests a potent ability to suppress inflammatory responses.
Accelerated Wound Healing
Sesame oil extract has demonstrated remarkable potential in wound treatment. Research showed that sesame oil promotes a significantly faster rate of wound closure and reduces the time it takes for new skin to cover a wound. This healing effect is attributed to its ability to prevent oxidative damage at the injury site and its capacity to scavenge free radicals that would otherwise impair the healing process.
Photoprotection and Anti-Aging
The oil’s antioxidant content, particularly vitamin E and sesamol, protects the skin from the damaging effects of UV radiation and environmental pollution. By fighting oxidative stress, sesame oil helps prevent premature aging, reducing the appearance of wrinkles and fine lines.
Hair and Scalp Health
In traditional practices and modern cosmetic formulations, sesame oil is used to strengthen hair shafts and roots, nourish a dry scalp, and prevent hair loss. Its ability to inhibit 5α-reductase makes it a beneficial component for anti-hair loss products, while its stimulation of melanin production makes it a viable treatment for graying hair.
Conclusion
Sesame seed oil is a versatile and potent agent for dermal therapy. Its unique combination of antioxidant lignans and essential fatty acids allows it to function as a moisturizer, a protector against environmental damage, and a therapeutic treatment for inflammatory conditions and wounds. Whether used in its pure form or as a base for advanced herbal creams, sesame seed oil offers a holistic and natural approach to maintaining skin health and managing various dermatological disorders.