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Ingredient function 56 ingredients · Page 1/2

OCCLUSIVE

Preventing and/or slowing down the evaporation of water from the skin surface.

Definition provenance: European Commission CosIng ingredient-function terminology.

56 ingredients in the EU CosIng inventory carry the OCCLUSIVE function designation.

Ingredients with the OCCLUSIVE function

Acetyl Isooctyl Polyricinoleate is the product obtained by the acetylation of Polyricinoleic Acid end-capped with Isooctanol.

CAS 2648350-43-8

Biotinoyl Decapeptide-64 Amide is the synthetic peptide by the reaction of Decapeptide-64 and Biotin in which the C-terminus is an amide.

Bis-Polycitronellyl Azelate is the product obtained by the transesterification of dimethyl azelate with Polycitronellol.

CAS 2810894-79-0

C18-70 ISOALKANE

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C18-70 Isoalkane (Formerly C18-70 Isoparaffin) is a mixture of branched chain aliphatic hydrocarbons with 18 to 70 carbons in the alkyl cha…

CAS 246538-80-7

C32-54 ISOALKANES

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C32-54 Isoalkanes is a mixture of branched chain aliphatic hydrocarbons with 32 to 54 carbons in the alkyl chain

CAS 2241366-04-9

Cyberlindnera Phospholipids is the phospholipid fraction derived from the microorganism, Cyberlindnera.

DITOCOPHERYL OXALATE

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Ditocopheryl Oxalate is the organic compound that conforms to the formula

Ethylhexyl Hydrogenated Rice Branate is the ester of 2-ethylhexanol with the fatty acids derived from Hydrogenated Rice Bran Oil that confo…

EUPHORBIA CERIFERA WAX

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Euphorbia Cerifera Wax is a wax obtained from Euphorbia cerifera. The accepted scientific name for Euphorbia cerifera is Euphorbia antisyph…

CAS 8006-44-8

HEXAPEPTIDE-93

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Hexapeptide-93 is the synthetic peptide consisting of arginine, glycine and valine.

Hydrolyzed Pig Bile Extract is the hydrolysate of an extract of pig bile derived by acid, enzyme or other method of hydrolysis.

Restricted — see record

LAURYL TRISILOXANE

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Lauryl Trisiloxane is the organic compound that conforms to the formula:

CAS 139614-44-1

OLEYL CANOLATE

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Oleyl Canolate is the ester of Oleyl Alcohol and the fatty acids derived from Canola Oil.

PALMITOYL HEXAPEPTIDE-93

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Palmitoyl Hexapeptide-93 is the product obtained by the reaction of palmitoyl chloride and Hexapeptide-93.

Palmitoyl Oligopeptide-243 Amide is the product obtained by the reaction of palmitoyl chloride with Oligopeptide-243 Amide.

Pediococcus Ferment Lysate is a lysate of the product obtained by the fermentation of growth media by Pediococcus.

PETROSELINIC ACID

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Petroselinic Acid is the organic compound that conforms to the formula

CAS 593-39-5

PHYTOENE

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Phytoene is the organic compound that conforms generally to the formula

CAS 13920-14-4 (cis-)/ 540-04-5 (trans-)

PHYTOFLUENE

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Phytofluene is the organic compound that conforms generally to the formula

CAS 27664-65-9 (cis-)/ 540-05-6 (trans-)

Propylene Glycol Azelate Esters is the complex mixture of esters and oligomers formed by the reaction of Azelaic Acid and Propylene Glycol.

These widely assigned CosIng terms provide populated comparison pages; they are not presented as semantic equivalents of the current function.

How the OCCLUSIVE function is used in CosIng

The OCCLUSIVE function is assigned by the European Commission in the CosIng ingredient inventory. This page currently lists 56 ingredients carrying that function label in the dataset, which helps you move from a functional claim to the exact ingredients that use it.

Preventing and/or slowing down the evaporation of water from the skin surface.

Function assignments come from official EU CosIng data. They describe intended cosmetic use, but they do not replace regulatory review of each linked ingredient and any annex records tied to it.

Frequently asked questions

The OCCLUSIVE function, as defined in the EU CosIng database, describes the role this group of ingredients plays in a cosmetic formulation. There are currently 56 ingredients in the EU CosIng inventory assigned this function. Function labels are standardised terms used in Product Information Files (PIF) and ingredient declarations.

Yes. An ingredient's function in the CosIng inventory is independent of its regulatory status. An ingredient with the OCCLUSIVE function may also be listed in Annex II (prohibited), Annex III (restricted), or other annexes. Always check each ingredient's annex records for applicable conditions before formulating.

Ingredient functions are documented in the Product Information File (PIF) as part of the cosmetic product safety assessment. They describe the intended role of each ingredient in the formulation and support the safety assessor's review. Functions do not appear on consumer-facing product labels, which list only INCI names.

Use the INCI Checker to paste your full ingredient list and screen it against all Annex II–VI restrictions, CMR classifications and allergen flags from the EU CosIng database.

Tools & next steps

Check your formula

Scan a full INCI list, then review which matched ingredients are tagged with the OCCLUSIVE function.

INCI Checker

Browse all functions

See the full list of cosmetic ingredient function categories in the EU CosIng inventory.

All functions

Review linked regulatory evidence

0 ingredients in this function have structured links to EU annex records.

Verify in CosIng