hydrocarbon hybrid fluids and can be any of those known to those skilled in the art preferred are fluids having the general formulae wherein each r is independently the same or different monovalent straight or branched chain alkyl group having from 1 to about 3 carbon atoms and r 1 is a monovalent straight or branched chain alkyl group having from 6 to about 18 carbon atoms or is phenyl these are prepared by methods known to those skilled in the art preferred volatile or non volatile silicone hydrocarbon hybrid fluids of the present invention are those with sensory characteristics similar to those of octamethylcyclotetrasiloxane which include 3 n hexyl 1 1 1 3 5 5 5 heptamethyltrisiloxane 3 n octyl 1 1 1 3 5 5 5 heptamethyltrisiloxane n hexyltris trimethylsiloxy silane phenyltris trimethylsiloxy silane and n octyltris trimethylsiloxy silane other useful fluids are those which are nonvolatile such as but not limited to 3 n dodecyl 1 1 1 3 5 5 5 heptamethyltrisiloxane and 3 n octadecyl 1 1 1 3 5 5 5 heptamethyltrisiloxane of course mixtures of any of the fluids may be employed in the practice of the present invention in preferred embodiments the fluids employed are at least 99 pure these mixtures can also contain other cosmetic ingredients including non volatile silicone aliphatic hydrocarbon hybrid waxes and organic materials such as long chain aliphatic hydrocarbons and esters active ingredients such as stearoxytrimethylsilane can be readily formulated into these mixtures the non volatile occlusive silicone aliphatic hydrocarbon hybrid waxes may be prepared according to methods known to those skilled in.