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Canonical INCI monograph

CYCLOTETRASILOXANE

Not on the EU Annex III list

Cyclotetrasiloxane is the cyclic dimethyl polysiloxane that conforms to the formula:

CYCLOTETRASILOXANE is listed in the European Commission CosIng inventory under the functional categories Skin Conditioning - Emollient, Hair Conditioning, Solvent, with CAS number 556-67-2 / 293-51-6 and EC number 209-136-7. CosIng records a restriction against it (II/1388), so check the corresponding Annex entry before formulating. In the free INCIDB sample it appears on 1 product label, reaching position 3 on Dermaveen Soothing Oatmeal Conditioner 1L.

CAS REGISTRY NUMBER
556-67-2 / 293-51-6
EC NUMBER
209-136-7
COSING FUNCTIONS
Skin Conditioning - Emollient, Hair Conditioning, Solvent
COSING RESTRICTION
II/1388

Sample products containing CYCLOTETRASILOXANE

Label positions from the free INCIDB sample. A lower position means the ingredient is declared earlier, i.e. present in a higher proportion.

PRODUCT LABEL POSITION
Dermaveen Soothing Oatmeal Conditioner 1L #3

Query CYCLOTETRASILOXANE in the full snapshot

import pyarrow.parquet as pq

ingredients = pq.read_table('ingredients.parquet').to_pandas()
target = ingredients[ingredients['inci_name'] == "CYCLOTETRASILOXANE"]
print(target[['ingredient_id', 'functions', 'cas_number', 'is_common_allergen']])

The complete snapshot covers 18,583 products. Coverage of each enrichment column is published, both per distinct name and weighted by label occurrence — see the coverage table.

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