Moderate Active Ingredient Dermal Penetration

Retinol

Also known as: All-trans retinol, Vitamin A, Retinol, all-trans-, 4-06-00-04133, Axerophtholum (+15 more)

INCI: RETINOL

Retinol (CAS 68-26-8) is a cosmetic active ingredient functioning as retinoid / skin-renewing / active. EU Regulation 1223/2009 status: restricted, max 0.05% RE in body lotions; 0.3% RE in other leave-on and rinse-off products. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.

View industrial chemical safety profile for CAS 68-26-8 →

Auto-generated CPSR Part A draft with source citations
Function
retinoid / skin-renewing / active
Safety Rating
MODERATE

Chemistry & Identifiers

EC Number
200-683-7

Regulatory Status

EU EU Status restricted
EU Max Conc. 0.05% RE in body lotions; 0.3% RE in other leave-on and rinse-off products
US US Status permitted
US Notes No federal concentration limits for retinol in OTC cosmetics. FDA classifies retinol as a cosmetic ingredient (not drug) at typical cosmetic use levels. No mandatory pregnancy or age warnings required under US law, unlike EU Regulation 2024/996. Safety guidance relies on industry self-regulation (CIR); CIR has affirmed retinol safe as used. Aggregate exposure concern (diet + supplements + topical) applies equally but is not regulated at federal level.

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Dermal Penetration Profile

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

Absorption %
8-12%
Penetration Level
dermis
Penetration Depth
epidermis/dermis
Molecular Weight
286.5 Da
Log P
5.68
Systemic Absorption
yes
Topical Bioavailability
2-5%
Safety Margin Factor
high
Vehicle Dependent
Yes — absorption varies by formulation

Source: SCCS/1516/13, CIR

EPA ToxValDB — Toxicity Values

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

Endpoint Value Species Route Duration Source
LEL >3000 mg/day Human oral - EFSA
LD50 =1510 mg/kg Mouse oral - ChemIDplus
LD50 =2000 mg/kg Rat oral - ChemIDplus

Endocrine Disruptor Evidence (Expanded)

Cross-referenced EDC classifications, mechanism data, and dose-response evidence from EDLists, SIN List, and cosmetic-specific detail sources.

Cosmetic-Specific Mechanism
Category: other
Receptor targets: RAR (retinoic acid receptors), RXR
LOEC: 100 nM
EU status: restricted (max 0.3% face leave-on; max 0.05% body leave-on; EU 2024/996)

agonist (RAR/RXR – nuclear receptors)

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
10 - 100 tonnes
Substance Type
SUBSTANCE; GROUP
SVHC Candidate
No

Expanded Jurisdictional Detail

Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.

Additional Jurisdictional Restrictions (5)
Jurisdiction Status Max % Product Type
CN restricted 0.3 (a) Face products (b) Body products
AU restricted 0.3 anti-aging products
AU restricted 0.05 body lotions
SA restricted 0.3 Leave-on and rinse-off products (non-body lotion)
UK restricted - -

Expanded Dermal Absorption Data

Cross-database dermal penetration: EPA Dryad physics-based, Roberts Mendeley permeation, and SCCS-aggregated measured values.

Aggregated DA Values (2 records across 5 sources)
Type DA % Method Skin Model SCCS Ref
measured_in_vitro 7.74 In vitro — Franz diffusion cells - SCCS/1576/16; SCCS/1639/21; SCCS/1661/23 (2016)
measured_in_vitro 10.0 - - SCCS/1516/13, CIR

Typical Use Concentrations

Reported concentration ranges per product category from SCCS/CIR/industry sources.

Product Category Typical Range Max Reported Source
Face Cream 0.01–0.3 1 CIR/SCCS 2023
Serum 0.1–0.5 1 CIR/SCCS 2023
Body Lotion 0.01–0.05 0.05 CIR/SCCS 2023

Additional Ingredient Properties

10 property records from structured ingredient metadata.

acne
{"cas_number": "68-26-8", "anti_acne_mechanism": "keratolytic/comedolytic/anti_inflammatory", "comedogenicity_rating_0_to_5": "0", "acne_type_efficacy": "inflammatory/non_inflammatory", "p_acnes_mic_ug_per_ml": "No direct antibacterial", "sebum_reduction_pct_clinical": "8-12", "keratolytic_strength": "moderate", "exfoliation_mechanism": "chemical", "optimal_ph_for_efficacy": "5.5-6.5", "peel_depth…
anti_aging
{"anti_aging_claim": "anti-wrinkle, collagen-boosting, cell-turnover, brightening", "mechanism_of_action": "Converted to retinal then retinoic acid, stimulates collagen, normalizes keratinization", "target_skin_layer": "epidermis, upper dermis", "collagen_stimulation": "Yes - increases collagen I, III by 70-80%", "elastin_protection": "Moderate", "wrinkle_reduction_pct": "10-25", "clinical_study_d…
anti_pollution
{"cas_number": "68-26-8", "ingredient_class": "other", "primary_mechanism": "barrier_reinforcement", "pollution_types_targeted": "PM2_5", "IR_A_protection": "no", "visible_light_protection": "no", "digital_screen_protection_claim": "no", "PAH_neutralization": "no", "ozone_protection": "no", "mitochondrial_protection": "no", "Nrf2_activation": "no", "AhR_pathway_modulation": "no", "NF_kB_inhibition…
baby_pediatric
{"cas_number": "68-26-8", "ingredient_class": "other", "pediatric_safety_rating": "contraindicated", "minimum_age_months": "0", "neonatal_safe": "no", "premature_infant_safe": "no", "skin_barrier_maturity_consideration": "CONTRAINDICATED: Teratogenic, skin turnover unsuitable for baby skin", "transepidermal_absorption_risk_pediatric": "high", "systemic_exposure_concern_pediatric": "high", "dose_pe…
comedogenicity_detail
{"comedogenicity_rating": "0", "irritancy_rating": "3", "skin_type_suitability": "oily,combination,normal,acne-prone,mature", "acne_safe": "yes", "source": "Vitamin A - irritating initially"}
concentration
{"min_concentration_pct": "0.01", "max_concentration_pct": "0.1", "typical_concentration_pct": "0.05", "product_type": "Eye Cream", "function_at_concentration": "Anti-aging, cell turnover", "source": "CIR Safety Assessment; Supplier TDS"}
dermal_absorption
{"molecular_weight_da": "286.5", "log_p_value": "5.68", "skin_penetration_level": "dermis", "penetration_depth": "epidermis/dermis", "absorption_pct": "8-12", "systemic_absorption": "yes", "penetration_enhancer": "no", "occlusion_effect": "no", "vehicle_dependent": "yes", "skin_barrier_effect": "weakens", "bioavailability_topical_pct": "2-5", "safety_margin_factor": "high", "source": "SCCS/1516/13…
interactions
{"ingredient_2": "Air (oxygen)", "interaction_type": "destabilizing", "severity": "caution", "effect": "Oxidation of retinol, reduced potency", "recommendation": "Airless packaging or nitrogen flushing recommended", "data_source": "Formulation science literature, dermatological research, cosmetic chemistry best practices", "last_updated": "2026-03-05"}

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Flavouring and nutrient Softener and conditioner
Regulatory List Membership (1)
FDA Substances Added to Food (EAFUS)

Expert Verdict

Expert safety assessment and concern-level summary for Retinol.

Regulatory Flags

eu-restricted sccs-opinion pregnancy-warning age-restriction aggregate-exposure-concern fda_food_additive

Dermal Absorption

View details ->
Absorption % Method Vehicle
7.74 In vitro — Franz diffusion cells Gel and o/w emulsion
10.0 - -

Known Synonyms

All-trans retinol Vitamin A Retinol, all-trans- 4-06-00-04133 Axerophtholum BRN 0403040 3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclchexen-1-yl)-2,4,6,8-nonatetraen-1-ol 3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraen-1-ol, (all-E)- EINECS 200-683-7 Homagenets Aoral Retrovitamin A Sehkraft A Super A Vi-alpha; Vi-alpha Vitamin A1 alcohol, all trans Vitamine A Vitaminum A Vitavel-A Wachstumsvitamin Antixerophthalmisches Vitamin

Chemical Function

Softener and conditioner Flavouring and nutrient

Regulatory Lists

pharmaceutical Europe; supplements Europe; food_additive; supplements inert_ingredient; Pesticides inert_ingredient; non_food_use; Pesticides food_additive; Substances Added to Food (formerly EAFUS) (2/2019)

Cross-Vertical Safety Context

Same-CAS public records found in pharmaceutical data.

SOURCE ChEMBL / DrugCentral / FAERS DB_PHARMA CAS match

Pharmaceutical Data

Same-CAS rows from the pharmaceutical spoke database.

Compound
RETINOL
ChEMBL ID
CHEMBL986
Max Phase
4
Adverse Event Associations
1884
View full pharmaceutical profile →

Frequently Asked Questions

Is Retinol safe in cosmetics?

Retinol has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted.

Is Retinol allowed in the EU?

Retinol EU regulatory status: restricted. Maximum allowed concentration: 0.05% RE in body lotions; 0.3% RE in other leave-on and rinse-off products. This is based on EU Regulation 1223/2009 and its amendments.

What does Retinol do in cosmetics?

Retinol functions as: retinoid / skin-renewing / active. It is classified as a Active Ingredient in our database. CAS number: 68-26-8.

Is Retinol used outside cosmetics?

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

Does Retinol have different safety status in cosmetics vs industrial chemicals?

Retinol is classified GHS Danger (H302, H317, H319, H360, H413) in the chemicals database but is restricted in EU cosmetics at max 0.05% RE in body lotions; 0.3% RE in other leave-on and rinse-off products.

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