A hair strengthening relaxing composition comprising a cationic polyquaternary polymer that is the product of a condensation reaction of a lower dialkylamine (C.sub.1 -C.sub.3), a difunctional epoxy compound and a third reactant selected from the group consisting of ammonia, primary amines, alkylene diamines having two to six carbon atoms, and polyamines; and a high-alkalinity hair relaxing agent.
A process for high-temperature sterilisation of products such as milk and the like comprises the steps of directly injecting steam into the product for heating it to a lower temperature than the sterilisation temperature, making the product stand for a definite period of time, making the product pass into an infuser to further heat it to the sterilisation temperature, keeping it to this temperature for a predetermined period of time, admitting the product to a vacuum chamber for sudden cooling of same. A plant for application of the above process therefore comprises a steam injector (12), an accumulator for product standing (13), an infuser (14) and a vacuum chamber (19), disposed in series.
A method of manufacture of a water emulsion and a new use of applying the composition to hair that improves the condition of excessively curly hair that has been subjected to a straightening process, the composition including at least three emollients chosen from the group consisting of mineral oil, isopropyl myristate, propylene glycol, cetyl alcohol, and lanolin, stearic acid, and a nonionic surfactant.
