Science
Mechanism of Action
The primary identified enzymatic component of testicular extract, hyaluronidase, acts to hydrolyze hyaluronic acid. This breakdown activity is optimal within a pH range of 5.2 (with NaCl) to 6.0 (without NaCl). However, this mechanism is generally associated with therapeutic applications rather than established cosmetic enhancement of the skin, and broader research on testicular extracts has not focused on topical cutaneous effects.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Due to a lack of documented clinical studies specifically investigating the topical cosmetic efficacy of Testicular Extract, no effective concentration range or dusting threshold can be established. Research has not focused on its use as a general cosmetic skin enhancer.
The Formula
Formulation
Stability
For optimal activity of bovine testicular hyaluronidase, a potential component, the pH should be maintained between 5.2 and 6.0. While general skincare formulations often target a pH range of 4 to 6 for skin compatibility, this ingredient's stability outside its enzymatic optimum for other potential components is not detailed. Historically, it has been dissolved in alcohol for subsequent dilution in aqueous or oil-based vehicles.
Safety
Safety Profile
Testicular Extract, or its synonym Orchic Extract, has not undergone review by the Cosmetic Ingredient Review (CIR) Expert Panel for cosmetic use. There is no specific FDA status documented for this ingredient in cosmetics. Concerns regarding safety for orally consumed 'orchic extract' (derived from cow testicles) include insufficient reliable information and potential contamination from diseased animal sources, which may raise questions for topical applications as well.
Your Skin
Skin Compatibility
Our Assessment
Verdict
With a profound absence of documented clinical efficacy for topical skin enhancement and no safety review for cosmetic use, the utility and safety of Testicular Extract in skincare remain largely undemonstrated.
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