Question: what is d5 in cosmetics?
Answer: Cyclopentasiloxane is a silicone regularly used in cosmetic products. It's commonly found in medical implants, sealants, lubricants, and windshield coatings. D5 is colorless, odorless, non-greasy, and water-thin. It doesn't get absorbed into the skin. Rather, it evaporates quickly away from it.