ACETYL FARNESYLCYSTEINE
86441L-Cysteine, N-acetyl-S-[(2E,6E)-3,7,11-trimethyl-2,6,10-dodecatrienyl]-
CAS 135304-07-3
Ingredient function
67 ingredients · Page 1/2
REDUCING
Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).
67 ingredients in the EU CosIng inventory carry the REDUCING function designation.
Ingredients with the REDUCING function
ACETYL HEXAPEPTIDE-22
84120Acetyl Hexapeptide-22 is the reaction product of Acetic Acid and Hexapeptide-22
BUTYROLACTONETHIOL
828782(3H)-Furanone, Dihydro-3-Mercapto-; Butyric acid, 4-hydroxy-2-mercapto-, gamma-lactone
CAS 14032-62-3
Dihydroxybenzylidene Succinimide is the organic compound that conforms generally to the formula
Acetic acid, 2-hydroxy-2-sulfino-, sodium salt (1:2)
CAS 29736-24-1
CAS 1869058-84-3
Acetic acid, 2,2'-dithiobis-, 2-hydroxyethylamine salt (1:2)
III/61
Hydrolyzed Saccharomyces/Lactobacillus/Ubiquinone Ferment is the hydrolysate of the fermentation product of Ubiquinone by the microorganism…
2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one; 2-hydroxy-4'-hydroxyethoxy-2-methylpropiophenone
CAS 106797-53-9
MAGNESIUM POWDER
87337Magnesium Powder is an inorganic metal consisting of powdered magnesium
CAS 7439-95-4
1H-Indol-7-amine, 5-[(1,1-dioxido-4-thiomorpholinyl)methyl]-N-[1-(methylsulfonyl)-4-piperidinyl]-2-phenyl-
CAS 1120333-38-1
OCTAPEPTIDE-15
90787Octapeptide-15 is a synthetic peptide consisting of aspartic acid, glutamine, histidine, proline, serine and valine.
OLIGOPEPTIDE-30
84100Oligopeptide-30 is a synthetic peptide containing 12 amino acids consisting of arginine, glutamic acid, leucine, lysine, and tyrosine
Phalaenopsis Aphrodite Callus Extract is the extract of the callus of Phalaenopsis aphrodite grown in culture, Orchidaceae.
RH-POLYPEPTIDE-28
86077rh-Polypeptide-28 is a single chain recombinant human peptide, produced by fermentation in E. coli. The starting gene is directly isolated …
II/416
SH-DECAPEPTIDE-7
84379sh-Decapeptide-7 is a single chain recombinant human peptide, produced synthetically to be identical to the protein, Enkephalin. It contain…
SH-OCTAPEPTIDE-4
87459SH-Octapeptide-4 is a recombinant human peptide produced synthetically to be identical to the protein, Enkephalin. It contains 8 amino acid…
How the REDUCING function is used in CosIng
The REDUCING function is assigned by the European Commission in the CosIng ingredient inventory. This page currently lists 67 ingredients carrying that function label in the dataset, which helps you move from a functional claim to the exact ingredients that use it.
Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).
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 REDUCING function, as defined in the EU CosIng database, describes the role this group of ingredients plays in a cosmetic formulation. There are currently 67 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 REDUCING 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 REDUCING function.
INCI CheckerBrowse all functions
See the full list of cosmetic ingredient function categories in the EU CosIng inventory.
All functionsSearch annex entries for REDUCING
Search annex entries whose names or descriptions overlap with the REDUCING function keyword.
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