Ingredient
BIS-ISOBUTYL PEG-24/PPG-7/DIMETHICONE COPOLYMER
Substance information
"Isobutyl" mostly refers to iso-butanol (2-methyl-1-propanol, i-butanol) as alcoholic component or generally a branched saturated hydrocarbon residue with 4 carbon atoms. "PEG" refers to a PEG-(polyethylene glycol-) derivative. The number behind "PEG-" (or the first number behind "PEG/...-") refers to the average number of molecular units -CH2-CH2-O-. "PPG" refers to a PPG-(polypropylene glycol-) derivative. The number behind "PPG-" (in the event of mixed PEG/PPG derivatives, the second number) states the average number of molecular units -CH2-CH2-CH2-O-. Ingredient on the basis of poly(di)methyl siloxane ("dimethicone"). "Copolymer" refers to a polymer composed of several different (mostly two) basic units (monomers).
Function(s) of this ingredient in cosmetic products
FILM FORMING
Produces a continuous film on skin, hair and / or nails
HUMECTANT
Holds and retains moisture in cosmetic products
Origin
synthetic
Background information on use in cosmetics
Solid PEG serve as consistency enhancers in lipsticks and creams as well as humectants. They are well tolerated by the skin and are not microbiologically sensitive, so that in general it is not necessary to add any preservatives. Polyethylene glycols (INCI: PEG-...) are poly condensation products of ethylene glycol, or polymerisation products of ethylene oxide. The number added to the name refers to the mean number of ethylene oxide units in the substance. The consistency of the PEG derivatives is increasingly solid with a growing degree of polymerisation. PEGs with a mean molar mass of up to 600 g/mol are liquid, up to 1,000 g/mol wax-like and from 4,000 g/mol solid wax-like substances. By mixing solid and liquid components, products of a creamy consistency are obtained which are used as water-free and water rinse-off bases. With growing molar mass water solubility and hygroscopicity (ability to absorb moisture) of the polyethylene glycols decrease. Polyethylene glycols and their derivates are preferentially used in cosmetic products since they have a broad spectrum of viscosity and solubility properties and have a very good skin tolerance. As water soluble, non-greasy substances polyethylene glycols are suitable for many cosmetic purposes. The liquid PEGs serve, eg, as glycerol substitute in facial, shaving and hair lotions, as solubilisers and solvents. Polypropylene glycol (PPGs) and their derivatives are used in cosmetic products like the polyethylene glycols (PEGs). They are often used in cosmetic products since they have a broad range of viscosity and solubility properties and have a very good skin tolerance. As water soluble, non-greasy substances, polypropylene glycols are suited for many cosmetic purposes. The liquid PPGs serve, for instance, as solubilizers and solvents.
Information on safe use
This substance is expressly approved and / or subject to a restriction as a result of an entry in Annex III of the EC Cosmetics Regulation after an assessment by the Scientific Committee on Consumer Safety of the EU Commission (SCCS). Restrictions can relate eg to purity criteria, a maximum concentration or the restriction to certain product categories. Subject to the conditions possibly imposed in Annex III, the use of this substance in cosmetic products is safe. Claudia Fruijtier-Pölloth: Safety assessment on polyethylene glycols (PEGs) and their derivatives as used in cosmetic products. In: "Toxicology" (2005), No. 214, P. 1-38. Publisher: Elsevier Ireland Ltd.
Belongs to the following substance groups
Regulating cosmetics
Cosmetics Ingredients are subject to regulation. Please note, different regulations may apply to cosmetic ingredients outside the EU.