Use of organomodified siloxane block copolymers as care active ingredient for the care of human or animal body parts

A method of preparing an organomodified siloxane block copolymer, said method comprising:

• A) incorporating at least one organopolysiloxane of general formula I
• in which
• R1 are identical or different aliphatic or aromatic hydrocarbon radicals having 1 to 20 carbon atoms,
• R2 is R1 or H, with the proviso that at least three radicals R2 are H,
• a is 5 to 500,
• b is 1 to 50,
• c is 0 to 5,
• onto a siloxane of general formula II containing double bonds
• where
• d is 10 to 1000 and R3, independently of one another, are identical or different hydrocarbon radicals having 2 to 12 carbon atoms and containing at least one double bond, wherein said incorporating includes an addition reaction of said at least one organopolysiloxane of general formula I onto said siloxane of general formula II in the presence of a platinum catalyst or a rhodium catalyst, with the proviso that at least one organopolysiloxane of the general formula I is present in at least a 6-fold molar excess, based on the siloxane of the general formula II containing double bonds, to give a reaction product having Si—H groups;
• and
• reacting the reaction product in at least one of the stages of:
• B) a transition-metal-catalysed partial or complete addition of the SiH groups onto alkenyl and/or alkynyl compounds, or
• C) a partial or complete reaction of the Si—H groups remaining after the above reaction(s) in the presence of a catalyst with at least one alcohol selected from the group of linear or branched, saturated, mono- or polyunsaturated, aromatic, aliphatic-aromatic, optionally halogen-atom-containing monoalcohols, polyether monoalcohols, polyester monoalcohols, and amino alcohols.