| abstract |
The present invention relates to a method for preparing, producing, and packaging a hydrogel to be applied to the skin in a thin layer, containing a gelling and thickening complex including carrageenan, glucomannan and galactomannan. Specifically, said hydrogel is provided in the form of a mask or patches in a kit for the cosmetic care of the face. The hydrogel of the invention is obtained and packaged according to a method including a first step of forming the hydrogel by the application of a negative heat shock inside the packaging thereof, then a second step of adding the cosmetic or pharmaceutical active principles in the form of a concentrated liquid composition, and a third step in which the packaging is hermetically sealed. |