abstract |
The invention relates to skincare agents containing an effective amount of microcapsules with an average diameter in the range of 0.1 to 5 mm, obtained as follows: (a) aqueous preparations of retinol or retinolic acid are processed with oil bodies in the presence of emulsifiers into O/W emulsions, (b) the emulsions thus obtained are treated with aqueous solutions of anionic polymers, (c) the resultant matrix for forming a capsule is brought into contact with aqueous chitosan solutions (d) the encapsulation products thus obtained are separated from the aqueous phase, optionally in the presence of thickeners. |