Is Isostearyl Isostearate safe in cosmetics?
Isostearyl Isostearate has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
Excellent
Cosmetic Ingredient
Isostearyl Isostearate
Also known as: Isooctadecanoic acid, isooctadecyl ester, EINECS 255-485-3, 16-Methylheptadecanoic acid, 16-methylheptadecyl ester, UNII-IV0Z586Z4Y
INCI: ISOSTEARYL ISOSTEARATE
Isostearyl Isostearate (CAS 41669-30-1) is a cosmetic cosmetic ingredient functioning as Emollient, skin conditioning agent, binder. 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 data.
View industrial chemical safety profile for CAS 41669-30-1 →
Auto-generated CPSR Part A draft with source citations
Function
Emollient, skin conditioning agent, binder
Safety Rating
EXCELLENT
Chemistry & Identifiers
IUPAC Name
16-methylheptadecyl 16-methylheptadecanoate
InChIKey
ABEXEQSGABRUHS-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
CIR: Safe as used (Alkyl Esters group, 237 ingredients). No specific FDA restrictions.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Isostearyl Isostearate.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
100 - 1,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Additional Ingredient Properties
4 property records from structured ingredient metadata.
comedogenicity_detail
{"comedogenicity_rating": "2", "irritancy_rating": "0", "skin_type_suitability": "dry,combination,normal", "acne_safe": "caution", "source": "Cosmetic chemistry"}
emulsion_hlb
{"hlb_required_as_emulsifier": "no", "hlb_required_of_oil_phase": "9", "co_emulsifier_pairs": "isosteareth_20,sorbitan_isostearate", "optimal_oil_phase_pct": "18-42", "optimal_water_phase_pct": "58-82", "droplet_size_range_um": "5-45", "creaming_resistance": "moderate", "coalescence_resistance": "excellent", "ostwald_ripening_resistance": "excellent", "freeze_thaw_stability": "good", "rheology_mod…
sensory
{"silky": "medium", "smooth, glides easily": "silky, luxurious", "dry-touch, non-greasy": "soft, smooth", "instant": "moderate", "low": "medium", "w/o": "w/o", "very-high": "high", "no": "no", "yes": "no", "light-diffusing": "luminous", "1.40": "1.46", "transparent": "transparent", "colorless": "colorless", "excellent": "good", "light": "medium", "synthetic": "synthetic"}
solubility_hlb
{"water_soluble": "no", "oil_soluble": "yes", "hlb_required": "5.0", "soluble_in": "oils, ethanol", "insoluble_in": "water, glycerin, propylene glycol", "log_p": "16.8", "appearance": "clear liquid", "source": "Alzo"}
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Binder
Softener and conditioner
Expert Verdict
Expert safety assessment and concern-level summary for Isostearyl Isostearate.
Known Synonyms
Isooctadecanoic acid, isooctadecyl ester
EINECS 255-485-3
16-Methylheptadecanoic acid, 16-methylheptadecyl ester
UNII-IV0Z586Z4Y
Chemical Function
Softener and conditioner
Binder
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Isostearyl Isostearate allowed in the EU?
Isostearyl Isostearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Isostearyl Isostearate do in cosmetics?
Isostearyl Isostearate functions as: Emollient, skin conditioning agent, binder. It is classified as a cosmetic ingredient in our database. CAS number: 41669-30-1.
Is Isostearyl Isostearate used outside cosmetics?
Isostearyl Isostearate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Isostearyl Isostearate compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
Related Ingredients
Acacia Decurrens/Jojoba/Sunflower Seed Wax Polyglyceryl-3 Esters
Excellent
Same category
Skin conditioning emollient, texturizer
Acetic/Linoleic/Palmitic Triglyceride
Excellent
Same category
Skin conditioning (emollient)
Acetyl Ornithine
Excellent
Same category
Emollient
Acetyl Proline
Excellent
Same category
Emollient
Acetyl Triethylhexyl Citrate
Excellent
Same category
Emollient, Film Forming, Plasticiser
Acetyl Trihexyl Citrate
Excellent
Same category
Plasticiser, Skin Conditioning (Emoll...
1-Methylhydantoin-2-imide (Creatinine)
Excellent
Similar safety
Skin conditioning (skin brightening/l...
2,6-Dimethyl-7-octen-2-ol (Dihydromyrcenol)
Excellent
Similar safety
Fragrance (perfuming), masking
2-Ethoxy-2,6,6-Trimethyl-9-Methylenebicyclo[3.3.1]Nonane (Boisiris™)
Excellent
Similar safety
Fragrance (rich woody, orris/iris roo...
2-Hydroxypropylcarbamato Amodimethicone
Excellent
Similar safety
Hair conditioning; modified aminosili...
2-O-Ethyl Ascorbic Acid
Excellent
Similar safety
Softener and conditioner
3 O Ethyl Ascorbic Acid
Excellent
Similar safety
Antioxidant; tyrosinase inhibitor; me...
TEA-Myristate
Good
Chemical family
Surfactant-Emulsifying, Skin Conditio...
ISOBORNYL DIPROPYLENE GLYCOL ETHERS
Good
Browse nearby
Antifoaming, Emulsion Stabilising, So...
ISOBUTYL METHACRYLATE/TRIFLUOROETHYLMETHACRYLATE/BIS-HYDROXYPROPYL DIMETHICONE ACRYLATE COPOLYMER
Good
Browse nearby
Film Forming, Hair Fixing
Is Isostearyl Isostearate in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Isostearyl Isostearate in your formulation.