WHEY
Conditioning Agent
Good
CAS Number: 92129-90-3
About WHEY
The watery part of milk — rich in proteins, vitamins, and natural lactic acid. Moisturizes, firms, and gently exfoliates skin. Avoid if you're dairy-allergic.
Detailed Analysis
Whey (CAS 92129-90-3) is the water-dispersible fraction of milk separated from curd during cheese manufacture. It contains whey proteins (β-lactoglobulin, α-lactalbumin, lactoferrin, immunoglobulins), lactose, lactic acid, vitamins (B-complex), and minerals (calcium, phosphorus). In cosmetics, it functions as a skin conditioning agent. Proteins provide film-forming and temporary firming effects; lactic acid contributes gentle AHA exfoliation and pH regulation; lactoferrin offers antioxidant and antimicrobial properties. Generally well-tolerated topically, though it is a significant allergen for individuals with dairy/milk protein allergy. Note: the ozone-layer ban restriction in the data appears to be a database artefact, not relevant to whey itself.
What It Does
Skin Benefits
- ✓ Moisturizes and hydrates skin via proteins and amino acids
- ✓ Temporary skin-firming effects from protein film formation
- ✓ Gentle exfoliation from natural lactic acid content
- ✓ Antioxidant properties from lactoferrin
- ✓ Anti-inflammatory — soothes irritated skin
Known Concerns
- ⚠ Major allergen for individuals with milk/dairy protein allergy
- ⚠ Contains lactose — may be problematic for some individuals
- ⚠ Potential for microbial contamination if not properly preserved
Safety Score
Good
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.