Common Name(s): Hydroxypropyltrimonium lemon protein,hydroxypropyltrimonium lemon protein,polyol or sugar derivative,humectant emollient active
CAS Number: N/a
DESCRIPTION
What It Does: Provides a complex of amino acids for skin and hair conditioning from the source protein's characteristic sequence — delivering sc-native amino acids for nmf replenishment, keratin structural support, and humectant moisture retention.
Why It's Used: Protein-source amino acid complexes provide the most physiologically compatible conditioning — the amino acid composition matching the source tissue provides structural complementarity with skin proteins for optimal conditioning substantivity.
How It Works: Free amino acids from hydrolysis provide: nmf replenishment (glutamic acid, serine, alanine — native sc humectants); keratin structural support (cysteine, glycine, proline — keratin and collagen building blocks); cationic conditioning (lysine, arginine — electrostatic deposition on negative surfaces).
Typically Found In: All formulations,natural skin care
TECHNICAL DETAILS
Primary Category: Active ingredient – humectant
Secondary Functions: Moisture retention,hydration
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%–10%
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Yes
Source Notes: Plant-derived or fermentation-produced. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 – very low
Comedogenicity Rating: 0/5 – non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for sensitive skin.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,barrier actives
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Sugar-derived ingredients provide exceptional safety profiles from the food-grade starting material heritage — gras status of many sugar feedstocks extends beneficial safety documentation to the cosmetic derivative.
Last Verified: 2026-03-22
Primary Sources: Cosing database,hydroxypropyltrimonium lemon protei polyol sugar derivative review