Science
Mechanism of Action
Functioning as a fundamental component of human sebum, the squalene within shark lipids provides essential hydration and creates a protective barrier to lock in skin moisture, thereby mitigating transepidermal water loss. Its antioxidant capabilities help defend skin cells from free radical damage. Additionally, it enhances the absorption and spreadability of formulations, contributing to a smoother skin appearance and assisting in the reduction of fine lines. Alkylglycerols, also present, serve as precursors to important membrane glycerophospholipids called plasmalogens.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Shark lipids, particularly their squalene component, are typically incorporated at effective concentrations (e.g., up to 1.2% for squalene) for their emollient and skin-conditioning benefits, making them unlikely candidates for 'dusting' at ineffectual levels.
The Formula
Formulation
Stability
Squalene, a key component, is an unsaturated hydrocarbon susceptible to oxidation, leading to a shorter shelf life and potential adverse skin reactions. To enhance stability and longevity, squalene is often hydrogenated into squalane, a saturated, non-oxidizable form. Emulsification and microencapsulation techniques can further improve the stability of shark oil and mitigate oxidation.
Safety
Safety Profile
The CIR Expert Panel has deemed Squalene (including shark-derived) safe for cosmetic use up to a maximum reported concentration of 1.2%. However, the European Union prohibits shark-derived squalene in cosmetics due to biodiversity concerns, although plant-based squalene and squalane are permitted. The FDA's warning against one specific shark oil product was related to improper notification, not a general ban.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While shark lipids offer valuable emollient, hydrating, and antioxidant benefits primarily through squalene, their ethical implications concerning biodiversity and legal restrictions in major markets like the EU necessitate a preference for sustainably sourced alternatives like plant-derived squalene or squalane.
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