The present invention provides a glycerin-modified silicone which has an excellent emulsification/dispersion performance and thickening effect when used alone, particularly when the oil phase is a continuous phase. The present invention is a specific diglycerin derivative-modified silicone having a long-chain hydrocarbon group at a prescribed ratio in a molecule and having as a hydrophilic group only a diglycerin derivative group not having an oxyalkylene structure with an average value of the number of repetitions of oxyalkylene units of two or more； and a composition containing the diglycerin derivative-modified silicone. WIPO published Abstract (EN) Provided is a glycerin-modified silicone that in itself has excellent emulsification and dispersion performance and an excellent gelling effect, particularly if the oil phase is a continuous phase. Provided is a specific diglycerin derivative-modified silicone having intramolecular long-chain hydrocarbon groups at a specific ratio and having as hydrophilic groups only diglycerin derivative groups that do not have an oxyalkylene structure in which the average number of repeating oxyalkylene units is two or more. Also provided is a composition that contains the diglycerin derivative-modified silicone.
