Process for the preparation of cosmetics
The invention relates to a process for the preparation of a cosmetic with a solid consistency and an excellent powdery marking effect, said process comprising extruding and drying a paste-type mixture and subsequent processing the solid product obtained
1 . Process for the preparation of a cosmetic which comprises extruding a paste obtained by mixing at least fats for cosmetic use, colouring powders and at least one solvent for cosmetic use, and subsequently drying the extruded product.
2 . Process according to claim 1 , wherein said paste is obtained by mixing at least one fatty emulsion in a solvent for cosmetic use, with colouring powders.
3 . Process according to claim 1 , wherein said fats are chosen from fatty acids, triglycerides, waxes, and fruit and seed oil derivatives and extracts.
4 . Process according to claim 3 , wherein said fats are chosen from sorbitan stearate, isopropyl stearate, caprylic/capric triglycerides, dipentacrythrityl hexahydroxystearate/stearate rosinate (Cosmol 168AR), magnesium mysristate and olive oil.
5 . Process according to claim 1 , wherein said solvent for cosmetic use is water.
6 . Process according to claim 2 , wherein said emulsion furthermore comprises one or more solid or liquid additives chosen from preserving agents, thickeners, adhesives, diluents and gelling agents.
7 . Process according to claim 1 , wherein said colouring powders comprise synthetic and/or natural pigments, matte or pearly, with inert powders as diluents.
8 . Process according to claim 1 , wherein drying is performed at temperatures between 35 and 55° C.
9 . Process according to claim 1 , wherein the dried product is further processed in order to modify its dimensions and/or shape.
10 . Process according to claim 1 that comprises:
preparing the two phases called “colouring powders” and “fatty emulsion”;
mixing said two phases;
extruding the paste obtained as above;
drying the extruded product;
sizing the dried product, if required.
11 . Process according to claim 10 wherein phase (c) is performed with an extruder or a drawing machine according to various shapes and sizes.
12 . Process according to claim 10 wherein the fatty emulsion and colouring powders phases are mixed in a proportion of approximately 50-50% by weight.
13 . Process according to claim 10 wherein phase (d) is performed in an oven, under vacuum or with fluidised bed.
14 . Process according to claim 10 wherein phase (d) is performed in an oven at a temperature between 35 and 55° C., until obtaining a residual humidity below or equal to 5%.
15 . Cosmetic suitable to be obtained via the process of claim 1 .
16 . Cosmetic of claim 15 which is an eye shadow or blusher.
17 . Use of the product suitable to be obtained via the process of claim 1 as a cosmetic.