Abstract: A microcapsule containing core material and a capsule wall, in which the capsule wall of the microcapsule comprises: organopolysiloxane synthesized by polycondensing one or more compounds represented by the general formula (II): RnSi(OH)mY(4−m−n)  (II) wherein, m represents an integer from 1 to 4; n represents an integer from 0 to 3; m+n≦4; R represents an organic group in which a carbon atom is directly connected to a silicone atom, and when n is greater than 1, each of the R groups may be the same or different; and Y represents at least one group selected from the group consisting of an alkoxy group, hydrogen and siloxy group, and when (4−m−n) is greater than 1, each of the groups Y may be the same or different; provided that the compound (B) comprises at least one compound of formula(II) wherein m=2 or 3 and at least one of R group possesses affinity for at least one of a continuous phase and a dispersed phase; a method for producing the microcapsule; an

Abstract: A base materials for cosmetics which comprises a silylated peptide of the formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and each is methyl group or hydroxyl group, R.sup.4 is a group bonding the terminal amino group in a side chain of a basic amino acid to the .alpha.-carbon atom wherein the side chain --R.sup.4 NH.sub.2 may partly form an N-heterocyclic ring, R.sup.5 is a side chain of an amino acid other than the above basic amino acid, A is methylene, propylene, --CH.sub.2 OCH.sub.2 CH(OH)CH.sub.2 -- or --(CH.sub.2).sub.3 OCH.sub.2 CH(OH)CH.sub.2 -- group, m is 0 to 100, n is 0 to 100, and m+n is 1 to 100, provided that m and n only show the number of amino acid units, but not amino acid sequence.