Ppg-5 laureth-5 (inci)

PPG is the acronym for "polypropylene glycol", the polymer of propylene glycol (1,2-propanediol), a dihydric alcohol. The number after "PPG" indicates the average number of propylene glycol molecular units, for "PPG-5" this is 5 propylene glycol molecular units.

"laureth-5" refers to the PEG ether of lauryl alcohol. The number 5 indicates the average number of integrated polyethylene monomers "-CH2-CH2-O-".
PPG-5 laureth-5 is used in cosmetic formulations. The substance mixture acts as an emollient (makes the skin smooth and supple), emulsifier (surface-active substance which is used as an additive in cosmetic products to combine two immiscible liquids - e.g. oil and water - to form an emulsion) and viscosity regulator (increases or decreases the viscosity of cosmetic products).