Ingredient
Cyclohexasiloxane (D6)
What is Cyclohexasiloxane (D6)?
Cyclohexasiloxane (D6) is a type of silicone commonly used in personal care products, such as sunscreen and makeup. It is a cyclic siloxane, characterized by its ring-like structure of silicon and oxygen atoms, which provides a smooth application and enhances texture.
It is primarily used for its ability to spread easily and form a barrier on the skin, making it popular in formulations that require a silky feel and quick drying properties. Health discussions around D6 often mention its potential to accumulate in the environment and the body, leading to concerns about its safety, although specific health impacts on humans are still under investigation.
When you see Cyclohexasiloxane on a label, it's typically in products that aim for a lightweight and smooth finish. It is worth noting regulatory bodies monitor its use to ensure consumer safety.
Commonly found in: Sunscreen, Makeup, Moisturizers, Conditioners, Deodorants
What to watch
- Regulatory agencies have raised concerns about its potential bioaccumulation and environmental persistence.
- Studies in laboratory settings have suggested possible endocrine disruption, but human-scale effects are not well established.
Benefits
- Provides a smooth texture and enhances the spreadability of products.
The FDA allows its use in cosmetics but monitors safety data to assess potential risks.
Research shows environmental and potential health concerns, but human impact remains unclear.
Cyclohexasiloxane is synthetic and not derived from animals, making it acceptable for vegan products.
Sources: Safety Assessment of Cyclopentasiloxane and Cyclohexasiloxane
Scout's take
Cyclic siloxane restricted in the EU due to environmental persistence and bioaccumulation. Classified as an endocrine disruptor and toxic to aquatic organisms.
More from Scout's analyses
Cyclic silicone in the same EU SVHC category as D5. Persists in the environment and bioaccumulates in aquatic life.
from the analysis of Blue Lizard Sensitive Mineral Sunscreen SPF 50EU SVHC; persistent and bioaccumulative.
from the analysis of EltaMD UV Clear Broad-Spectrum SPF 46Found in 3 products
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