Excellent Emulsifier Dermal Penetration

Phosphatidylcholine

Also known as: Lecithins, Soybean lecithin, Acti-flow 68-sb, EINECS 232-307-2, Emulthin M-35 (+3 more)

INCI: PHOSPHATIDYLCHOLINE

Phosphatidylcholine (CAS 8002-43-5) is a cosmetic emulsifier functioning as Principal phospholipid emulsifier and bilayer-forming material for cosmetic. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and food safety data.

View industrial chemical safety profile for CAS 8002-43-5 →

Auto-generated CPSR Part A draft with source citations
Function
Principal phospholipid emulsifier and bilayer-forming material for cosmetic delivery systems. Sourced from soybean, sunflower, or egg lecithin. Forms liposomal vesicles for delivery of hydrophilic actives (vitamin C, caffeine) and lipophilic actives (CoQ10, vitamins A/E). Commercial purity grades range from ≥45% PC (lecithin fractions) to ≥94% PC (high-purity PHOSPHOLIPON 90 G type). COSMOS-approved non-GMO sunflower variants available.
Safety Rating
EXCELLENT

Chemistry & Identifiers

EC Number
232-307-2

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes FDA GRAS for food use. CIR reviewed and safe. Sunflower PC preferred for non-GMO/COSMOS compliance. Biocompatible, biodegradable, and minimally immunogenic.

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Phosphatidylcholine.

Calculate MoS for your specific formulation with the MoS Calculator.

Dermal Penetration Profile

Skin absorption and penetration characteristics of Phosphatidylcholine, relevant to systemic exposure and MoS calculations.

Absorption %
5-12%
Penetration Level
stratum-corneum
Penetration Depth
stratum corneum/epidermis
Molecular Weight
758.1 Da
Log P
5.5
Systemic Absorption
minimal
Topical Bioavailability
3-10%
Safety Margin Factor
moderate
Vehicle Dependent
Yes — absorption varies by formulation

Source: J Liposome Res 2012

EPA ToxValDB — Toxicity Values

1 toxicity value from EPA ToxValDB (aggregated from CCTE, HPV, ToxRefDB, IRIS, and other regulatory dossiers).

Endpoint Value Species Route Duration Source
NOAEL =3750 mg/kg-day Rat oral chronic EFSA

Additional Ingredient Properties

7 property records from structured ingredient metadata.

anti_aging
{"anti_aging_claim": "barrier-repair, hydration-plumping", "mechanism_of_action": "Lipid barrier restoration, TEWL reduction, emollient", "target_skin_layer": "stratum corneum", "collagen_stimulation": "No", "elastin_protection": "No", "wrinkle_reduction_pct": "8-15", "clinical_study_duration_weeks": "8", "sample_size": "30", "double_blind": "No", "placebo_controlled": "Yes", "published_journal": …
dermal_absorption
{"molecular_weight_da": "758.1", "log_p_value": "5.5", "skin_penetration_level": "stratum-corneum", "penetration_depth": "stratum corneum/epidermis", "absorption_pct": "5-12", "systemic_absorption": "minimal", "penetration_enhancer": "yes", "occlusion_effect": "no", "vehicle_dependent": "yes", "skin_barrier_effect": "strengthens", "bioavailability_topical_pct": "3-10", "safety_margin_factor": "mod…
emulsifier
{"cas_number": "8002-43-5", "ingredient_class": "O/W_emulsifier,liquid_crystal_former", "chemical_type": "lecithin", "HLB_value": "10.0", "HLB_required_for_oil_phase": "9-11", "emulsion_type_primary": "O/W", "droplet_size_typical_um": "5-15", "surface_tension_reduction_mN_m": "32", "interfacial_tension_reduction": "36", "foam_formation": "low", "foam_stability": "low", "liquid_crystal_formation": …
emulsion_hlb
{"hlb_value": "3.5", "hlb_required_as_emulsifier": "yes", "emulsifier_type": "w_o", "critical_packing_parameter": "0.58-0.78", "emulsion_stabilization_mechanism": "electrostatic_steric", "co_emulsifier_pairs": "xanthan_gum,cholesterol", "optimal_oil_phase_pct": "60-88", "optimal_water_phase_pct": "12-40", "electrolyte_tolerance": "moderate", "pH_emulsion_stability_range": "4.0-7.5", "viscosity_bui…
pregnancy_detail
{"pregnancy_safe": "yes", "breastfeeding_safe": "yes", "risk_category": "not-rated", "reason": "Safe; naturally occurring phospholipid", "source": "dermatology literature"}
surfactant
{"cas_number": "52835-65-5", "surfactant_type": "nonionic", "chemical_class": "fatty_acid_soap", "charge_at_use_ph": "neutral", "cmc_critical_micelle_concentration_mm": "6.762906302853345", "hlb_value": "30.72252245140017", "foam_volume_ml_ross_miles": "129", "foam_quality": "dense", "foam_stability_5min_pct": "82", "cleansing_power_rating_1_to_10": "8.316847242417646", "oil_emulsification_capacit…
synergy
{"inci_name_2": "Caffeine + Carnitine", "synergy_type": "efficacy-boost", "synergy_description": "Lipolytic complex for body contouring and cellulite reduction", "combined_benefit": "Enhanced fat breakdown, improved drainage, reduced cellulite appearance", "efficacy_multiplier": "2.4x", "mechanism_of_action": "Phosphatidylcholine breaks down fat; caffeine mobilizes lipids; carnitine transports fat…

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Anti-caking agent Anti-static agent Antioxidant Drier Emulsifier Flavouring and nutrient Fragrance Humectant Lubricating agent Pharmaceutical excipient
Regulatory List Membership (6)
EU Regulated in Personal Care EU Restricted for Children (Cosmetics) IFRA Fragrance Transparency List EPA Safer Chemical Ingredients List (SCIL) FDA Substances Added to Food (EAFUS) Consumer Product Chemical

Expert Verdict

Expert safety assessment and concern-level summary for Phosphatidylcholine.

Regulatory Flags

emulsifier liposomal-delivery biocompatible biodegradable non-gmo-sunflower-preferred cosmos-eligible penetration-enhancer delivery-system eu_children_restricted epa_safer_alternative ifra_fragrance fda_food_additive

Known Synonyms

Lecithins Soybean lecithin Acti-flow 68-sb EINECS 232-307-2 Emulthin M-35 Ovovitellin Vitellin L-α-Phosphatidylcholine

Chemical Function

Softener and conditioner Humectant Anti-static agent Emulsifier

Regulatory Lists

active_ingredient; Europe; Pesticides inert_ingredient; Pesticides inert_ingredient; non_food_use; Pesticides IFRA Transparency SCIL (9/2019) consumer_product drinking_water; Europe; manufacturing; plastic_additive active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Pesticides active_ingredient; Europe; Pesticides Europe; Personal care

Australian Status

AICIS status: listed

Cross-Vertical Safety Context

Same-CAS public records found in food safety data.

SOURCE EFSA / FDA GRAS food_additives

Food Safety Data

Same-CAS food additive or FDA GRAS records from the core public database.

Food Name
Lecithin
E Number
E322
ADI
NOT LIMITED mg/kg bw
Food Category
preservative
View full food safety profile →

Frequently Asked Questions

Is Phosphatidylcholine safe in cosmetics?

Phosphatidylcholine has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.

Is Phosphatidylcholine allowed in the EU?

Phosphatidylcholine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Phosphatidylcholine do in cosmetics?

Phosphatidylcholine functions as: Principal phospholipid emulsifier and bilayer-forming material for cosmetic delivery systems. Sourced from soybean, sunflower, or egg lecithin. Forms liposomal vesicles for delivery of hydrophilic actives (vitamin C, caffeine) and lipophilic actives (CoQ10, vitamins A/E). Commercial purity grades range from ≥45% PC (lecithin fractions) to ≥94% PC (high-purity PHOSPHOLIPON 90 G type). COSMOS-approved non-GMO sunflower variants available.. It is classified as a Emulsifier in our database. CAS number: 8002-43-5.

Is Phosphatidylcholine used outside cosmetics?

Phosphatidylcholine also appears in industrial chemical safety and food safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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