Abstract: The invention relates to drug-free or drug-loaded lipid particles of a mixed matrix made of solid and liquid lipids, and to a method for producing highly concentrated lipid particle dispersions of solid-liquid particles having a lipid content of from 30% to 95% or a solids content of from 30% to 95% (lipid and stabilizer), which in contrast to biamphipileic cremes are integer particles, and/or which upon dilution of the highly concentrated particle dispersions with the outer phase result in free-flowable particle dispersions.

Abstract: The invention relates to superfine microparticles and nanoparticles and a process for their gentle preparation with exclusion of water or minimization of water and/or exclusion of plasticizers and/or reduced temperature load, in which a matrix material is subjected to a high-pressure homogenization process in an anhydrous or water-poor medium and/or at low temperatures, preferably room temperature (20° C.) and in particular below the freezing point of water, which leads to a gentle particle reduction with minimization of the impairment of the chemical stability of the homogenized material.

Abstract: The invention relates to agents with UV radiation-absorbing and/or reflecting action comprising solid, polymorphic, crystal-line or partially crystalline lipid and/or polymer particles, for application to the skin, mucous membranes, scalp, and hair for protection against health-damaging UV radiation and for strengthening the natural skin barrier.

Abstract: The invention relates to particulate active ingredient vehicles which are in the solid aggregate state at room temperature (20° C.) and consist of a pure lipid-drug conjugate (LDC) or a mixture of several LDCs as particle matrix, the bond in the LDC being effected by covalent bonding, electrostatic interactions, dipole moments, dispersion forces, ion interactions, hydrogen bridges and/or hydrophobic interactions.