The invention provides a branched polyglycerol-modified silicone, silicon atoms of which are connected to at least one branched polyglycerol chain having one or more branched glycerol groups represented by the following formula (1) via a connecting group, a method for producing the same, and a cosmetic containing the same: ##STR00001## wherein, two oxygen atoms each independently bind to a glycerol or glycidol group represented by formula (1) above or the following formula (2), (3), or (4) ##STR00002##