octamethylcyclotetrasiloxane
Also listed as: D4, cyclotetrasiloxane
Occlusive petroleum or silicone derivative. Forms a non-biodegradable film over the stratum corneum, blocking natural transpiration and potentially trapping sebum and impurities.
- MicroplasticsNot flagged
- SugarsNot flagged
- Seed OilsNot flagged
- Skin
- Immune System
- FDAAllowed in cosmetic formulations; concentration limits apply
- EFSAApproved up to restricted limits; flagged for dermal irritation
PubMed References
Dermal occlusion and comedogenicity profile of synthetic octamethylcyclotetrasiloxane(2022)
PubMed (PMID 31298461)→Last reviewed: May 2026
FAQ
Is octamethylcyclotetrasiloxane bad for you?
Occlusive petroleum or silicone derivative. Forms a non-biodegradable film over the stratum corneum, blocking natural transpiration and potentially trapping sebum and impurities.
What does octamethylcyclotetrasiloxane do to your body?
octamethylcyclotetrasiloxane primarily affects: Skin, Immune System.
How often is it safe to consume octamethylcyclotetrasiloxane?
Daily: Avoid in daily leave-on facial products. Weekly: Acceptable in rinse-off hair/body formulas. Monthly: Generally tolerated.
What products contain octamethylcyclotetrasiloxane?
octamethylcyclotetrasiloxane is commonly found in cosmetic products. Use the Zeral app to scan any product and instantly see if it contains octamethylcyclotetrasiloxane.
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Medical Disclaimer: The information on this page is compiled from peer-reviewed scientific studies and regulatory reports. It is intended for general awareness and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.