Abstract: The invention relates to a rapid-action depilatory composition, comprising at least one bisulphic and/or sulphite compound and an organic reducing agent in a cosmetically acceptable medium.

Abstract: Process for the preparation of amino acids by hydrolysis of proteins such as pig bristles. Said process comprises the charging into a vat of a solution of sulphuric acid at least 12N, heating the solution to at least 100.degree. C., adding simultaneously the proteins to be hydrolyzed and a complementary amount of sulphuric acid corresponding to the neutralization of the amine functions of the amino acids, maintaining the hydrolysis conditions in 12N medium and at 100.degree. C., stopping the reaction by addition of water and removing the acid in excess. Thereby, a mixture of amino acids is obtained with a good yield and without degradation.

Abstract: A reaction column for the physical or chemical treatment of a solution in heterogeneous phase. Such a column operates under a pressure substantially equal to the height of charge in the column; its lower part is conical, the lining comprises a static component and, arranged within the cone, layers of inert materials of a size and density increasing from the top to the bottom; a free height being left between the top of the upper layer and the top of the column.

Abstract: The present invention relates to N-acyl-L-aspartyl taurines and to pharmaceutical compositions containing same as active ingredient. In particular, N-acyl-L-aspartyl-taurine is useful in human or animal patients as active agent in drugs with hypotensive and/or antihypertensive effect. The product may be administered orally at a rate of 0.5 to 1.5 g per day.