Science
Mechanism of Action
Shark Liver Oil's efficacy stems from its high content of squalene and alkylglycerols (AKGs). Squalene, a natural constituent of human sebum, integrates efficiently into the skin's lipid barrier, enhancing hydration, contributing to skin softness and smoothness, and forming a protective layer against UV radiation and environmental aggressors. This barrier also helps prevent premature aging. AKGs, alongside squalene, may exhibit antimicrobial properties, specifically antibacterial and antifungal actions, which are beneficial for addressing conditions like atopic dermatitis. Furthermore, the oil acts as an effective solvent, facilitating the uniform dispersion and optimized delivery of other active ingredients within cosmetic formulations.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 A specific shark liver oil product, 'isolutrol', demonstrated efficacy as a topical treatment for acne at a 0.15% concentration.
- 02 It is recognized as a supportive treatment for atopic dermatitis, providing protection against bacterial and fungal infections, particularly benefiting individuals experiencing xerosis and compromised skin barrier function.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This oil exhibits shear-thinning (pseudoplastic) behavior, which is advantageous for topical applications by promoting easy spreading while retaining structural integrity at rest. It typically presents as a dark yellow to brown liquid with a distinct pungent aroma, which may necessitate masking in certain cosmetic formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 1982 that its primary components, Squalane and Squalene, are safe for use in cosmetics. While generally considered safe for topical application, patch testing is recommended due to potential for skin irritation, redness, itching, or allergic reactions. Information regarding its topical use during pregnancy and breastfeeding is limited, advising professional healthcare consultation. Concerns exist about unrefined shark liver oil products potentially containing pollutants like polychlorinated biphenyls and polybrominated diphenyl ethers.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Shark Liver Oil is a valuable ingredient, offering significant hydrating, protective, and potential antimicrobial benefits for dry, sensitive, and normal skin types, though its moderate irritancy and sourcing considerations warrant careful formulation.
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References
Sources