Abstract: In a fragrance and/or aroma composition for the targeted release of fragrances and/or aromas in the form of a solid lipid nanoparticle (SLN) dispersion, in which lipid-based nanoparticles are present which are stabilized by an emulsifier monolayer, one or more membrane layers or other auxiliaries, the fragrances and/or aromas are included in the nanoparticles and/or in the emulsifier monolayer or the membrane layers.

Abstract: A use of mixtures of surfactants which form multilamellar liquid-crystalline structures, where the surfactants are chosen from at least two of the following groups formed from isethionates, taurates, sarcosinates, acyl lactylates, acyl glutamates, fatty acid-protein condensates, PEG stearates, PEG distearates with an HLB value of less than 10, alkyl polyglycosides and betaines for reducing the skin irritant action of cosmetic and/or pharmaceutical formulations which are applied to the skin, and for improving hair structure is described.

Abstract: A device for continuously producing emulsions or dispersions while excluding air comprises a mixing vessel, which is closed on all sides and which has supply tubes and discharge tubes for introducing and discharging fluid substances or compositions, and also an impeller, which permits an agitating input into the emulsion or dispersion without generating cavitation forces and without high-pressure homogenization. For preparing the cosmetic emulsions of the invention, as well, emulsifiers are generally used.

Abstract: Membrane-structured solid nanoparticles having an average diameter in the range from 10 to 10 000 nm which are solid at 25° C. and have a combination of active compound vehicle particles and emulsifiers such as to form membranes which infiltrate the entire nanoparticles so that there are emulsifiers in the interior and on the surface of the nanoparticles are described.

Abstract: Ether alcohols of the general formula (I) R1—O-[EO—]n[PO—]mR2 where R1 is C1-4-alkyl, R2 is hydrogen or C1-4-alkyl, n is on average 1 to 100, m is on average 0 to n/2 EO, PO are basic building blocks derived from ethylene oxide and propylene oxide, which may be present in any order if both building blocks are present, are used as solvents, solubility promoters or dispersion auxiliaries for organic compounds which are insoluble or insufficiently soluble in lipophilic and hydrophilic media, and as dispersion auxiliaries or continuous phase for (micro)pigment dispersions.

Abstract: A measuring probe for determining the physical stability of emulsions and dispersions, is constructed from a rod comprising a material which is electrically nonconductive at least on the rod surface. The rod carries at least two conductivity-measurement electrodes separated from one another along the rod. These electrodes are separately supplied with electricity via the interior of the rod at one rod end. A method for determining the physical stability of emulsions and suspensions involves placing an emulsion or dispersion a sample container, immersing a measuring probe in the filled sample container, and measuring the conductivity of the emulsion or dispersion continuously or at intervals over a given period of time using the conductivity-measurement electrodes.