Solution particularly for the pretreatment of a hydrophilic surface for hydrophobizing, consisting of I. at least one silane of the formula with R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 3 to 12 p = 1 or 2 and for p = 1 Y = a functional group selected from the group of (meth)acryloyl, (meth)acryloyloxy, mercapto, ureido, -NH-CH 2 -CH 2 -NR 4 R 5, -NR 4 R 5 (with R 4 and R 5 independently of one another selected from the group of H, alkyl, phenyl, benzyl, cycloalkyl), or for p = 2 Y = NH and II. at least one second, aging stability enhancing silane having not more than two carbon atoms in chain attached to the silicon, wherein the second silane individually or in any desired combination is selected from the group of a) a silane of the formula with R 8 = H, and/or b) a silane having the formula with R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 1 p = 1 Y = NHR 6, OR 6, SR 6 (with R 6 = H, alkyl, phenyl, benzyl, C(X 1)-X 2 -R 7, C(X 1)-R 7 with X 1 and X 2 independently of one another = 0 or S and R 7 = alkyl, phenyl or cycloalkyl) and/or c) a silane of the formula Si(OR 9) 4 with R 9 = methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, benzyl, phenyl. I. at least one silane of the formula with R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 3 to 12 p = 1 or 2 and for p = 1 Y = a functional group selected from the group of (meth)acryloyl, (meth)acryloyloxy, mercapto, ureido, -NH-CH 2 -CH 2 -NR 4 R 5, -NR 4 R 5 (with R 4 and R 5 independently of one another selected from the group of H, alkyl, phenyl, benzyl, cycloalkyl), or for p = 2 Y = NH and R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 3 to 12 p = 1 or 2 and for p = 1 Y = a functional group selected from the group of (meth)acryloyl, (meth)acryloyloxy, mercapto, ureido, -NH-CH 2 -CH 2 -NR 4 R 5, -NR 4 R 5 (with R 4 and R 5 independently of one another selected from the group of H, alkyl, phenyl, benzyl, cycloalkyl), or for p = 2 Y = NH and II. at least one second, aging stability enhancing silane having not more than two carbon atoms in chain attached to the silicon, wherein the second silane individually or in any desired combination is selected from the group of a) a silane of the formula with R 8 = H, and/or b) a silane having the formula with R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 1 p = 1 Y = NHR 6, OR 6, SR 6 (with R 6 = H, alkyl, phenyl, benzyl, C(X 1)-X 2 -R 7, C(X 1)-R 7 with X 1 and X 2 independently of one another = 0 or S and R 7 = alkyl, phenyl or cycloalkyl) and/or c) a silane of the formula Si(OR 9) 4 with R 9 = methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, benzyl, phenyl. a) a silane of the formula with R 8 = H, and/or b) a silane having the formula with R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 1 p = 1 Y = NHR 6, OR 6, SR 6 (with R 6 = H, alkyl, phenyl, benzyl, C(X 1)-X 2 -R 7, C(X 1)-R 7 with X 1 and X 2 independently of one another = 0 or S and R 7 = alkyl, phenyl or cycloalkyl) R 1, R 2, R 3 independently of one another selected from the group of methyl, ethyl, 2-methoxyethyl, propyl, isopropyl, butyl, benzyl m = 0 or 1 n = 1 p = 1 Y = NHR 6, OR 6, SR 6 (with R 6 = H, alkyl, phenyl, benzyl, C(X 1)-X 2 -R 7, C(X 1)-R 7 with X 1 and X 2 independently of one another = 0 or S and R 7 = alkyl, phenyl or cycloalkyl) c) a silane of the formula Si(OR 9) 4 with R 9 = methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, benzyl, phenyl.