An aminosiloxane/alkyl silane blend

An aminosiloxane/alkyl silane blend for imparting hydrophobicity to hair, comprising:

• (a) 0.2 to 15 wt % of a cosmetically acceptable condensation catalyst selected from the group consisting of organic titanates, organic zirconates and mixtures thereof;
• (b) 1 to 20 wt % of a cosmetically acceptable aminosiloxane of formula (I)
• wherein each R1 is independently selected from the group consisting of a C1-30 alkyl group, a C1-30 alkoxy group, a C5-30 aryl group, a C6-30 aralkyl group, a C6-30 aralkyloxy group, a C1-30 alkaryl group, a C1-30 alkoxyaryl group, and a hydroxy group;
• wherein R2 is a divalent alkylene radical having one to ten carbon atoms;
• wherein each R3 is independently selected from the group consisting of a C1-30 alkyl group, a C5-30 aryl group, a C6-30 aralkyl group and a C1-30 alkaryl group;
• wherein Q is a monovalent radical selected from the group consisting of —NR42 and —NR4(CH2)xNR42;
• wherein each R4 is independently selected from the group consisting of a hydrogen and a C1-4 alkyl group;
• wherein x is 2 to 6;
• wherein z is 0 or 1;
• wherein n is 25 to 3,000;
• and
• wherein m is 0 to 3,000;
• with the proviso that at least 50 mol % of the total number of R1 and R3 groups are methyl and with the proviso that when m is 0, z is 1;
• (c) 5 to 75 wt % of a cosmetically acceptable alkyl silane of formula (II)
• wherein a is selected from 0 and 1;
• wherein R5 is a C2-10 alkyl group with an addition reaction functional moiety;
• and
• wherein each R6 is independently selected from a C1-4 alkyl group;
• and
• (d) 15 to 93.8 wt % of a cosmetically acceptable polydimethylsiloxane of formula (III)
• wherein n is an average of 0 to 150.