Science
Mechanism of Action
This ingredient can modulate the expression of matrix metalloproteinases (MMPs) and key extracellular matrix (ECM) components in dermal fibroblasts, specifically down-regulating type-I collagen and α-smooth muscle actin while up-regulating fibronectin through the ERK1/2 signaling pathway. Enzymatic hydrolysis also yields bioactive peptides with documented anti-inflammatory, antioxidant, and antimicrobial properties. Additionally, the breakdown of red blood cells may induce heme oxygenase-1 (HO-1) expression, leading to cytoprotective and anti-inflammatory molecular generation and supporting immune resolution.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Demonstrated significant antioxidant activity (approximately 98-99%) in hemoglobin hydrolysates at 10 mg/mL compared to lower concentrations, though this was in a non-skincare context.
- 02 Exhibited strong antimicrobial activity against six bacterial strains at 20 mg/mL, with increased activity noted at higher concentrations (80 mg/mL, 160 mg/mL). These findings were observed in food/pharmaceutical applications, not topical skincare.
Transparency
Dusting Analysis
No available data suggests that Hydrolyzed Red Blood Cells are typically 'dusted' in cosmetic formulations, nor is there information on common usage thresholds or red-flag percentages for topical applications.
The Formula
Formulation
Stability
Optimal pH for the enzymatic hydrolysis process to produce these hydrolysates is between 6.50-7.00, peaking at pH 7.00. While protein solubility, particularly hemoglobin, can decrease at its isoelectric point around neutral pH, general stability and function appear better above pH 6.5 compared to lower pH ranges common in conventional storage solutions for red blood cells.
Conflicts
- May impart a 'dark red-brown color' and 'metallic taste,' which can be undesirable in cosmetic products, although enzymatic hydrolysis can help mitigate the color.
- Protein solubility can be adversely affected by certain processing methods, including spray-drying and high hydrostatic pressure.
- Has the potential to impact formulation characteristics such as foaming capacity and gel formation.
Safety
Safety Profile
No specific safety assessments for Hydrolyzed Red Blood Cells as a cosmetic ingredient have been conducted by leading regulatory bodies such as the Cosmetic Ingredient Review (CIR), Scientific Committee on Consumer Safety (SCCS), or FDA. Therefore, its comprehensive safety profile for topical application is currently unestablished.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While in-vitro data suggests promising mechanisms for antioxidant, antimicrobial, and ECM modulation, a lack of specific clinical efficacy data for topical skincare applications and formal safety assessments for cosmetic use necessitates further research to definitively determine its value.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources