Cyclopentasiloxane
Solvent
Cyclopentasiloxane is a liquid used in cosmetics and personal care products to help ingredients mix together and to give a smooth texture. It's also used to help products spread evenly and to make them last longer.
Source: EWG Skin Deep
Cyclopentasiloxane has been linked to hormone disruption and reproductive issues in animal studies, but more research is needed to confirm its safety for human use.
✨Cosmetic silicone oil Cyclopentasiloxane IOTA D5 #siliconeoil #cosmetics #cyclopentasiloxane
Chen Krystal
r/AsianBeauty
Curel Intensive Moisture Cream
Toxicokinetic Profiles and Potential Endocrine Disruption Effects at the Reproductive Level Promoted by Siloxanes Used in Consumer Products.
Marrugo-Padilla A, Atencio-Diaz AB, Barros-Domínguez MF
2025
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Last updated: May 16, 2026