Ingredient · Updated
Cyclic Siloxanes D4 / D5
Found in 1 product
What is Cyclic Siloxanes D4 / D5?
Cyclic Siloxanes D4 and D5 are part of a group of silicones, composed of silicon, oxygen, carbon, and hydrogen. They are typically synthesized through the hydrolysis of silane compounds followed by polymerization.
These compounds are primarily used in personal care products to improve texture and spreadability, and to impart a silky feel to the skin. Some studies have raised concerns about their potential environmental impact and bioaccumulative properties, although findings on their human health impact are not conclusive.
When you see them listed on a label, it's worth noting their role in delivering a smooth application experience, though environmental considerations might be a point for further investigation.
Commonly found in: lotions, creams, conditioners, makeup, deodorants
What to watch
- Can accumulate in the environment, leading to potential ecological harm.
- Some studies suggest bioaccumulation in aquatic organisms.
Benefits
- Enhances product spreadability and imparts a smooth texture.
The FDA does not specifically regulate these siloxanes but oversees cosmetic products for safety.
Research indicates potential environmental concerns, but human health effects are less certain.
These compounds are synthetic and not derived from animals, typically considered vegan-friendly.
Sources: Octamethylcyclotetrasiloxane (D4) Risk Assessment · Decamethylcyclopentasiloxane (D5) Risk Assessment
Scout's take
D4 is on the EU SVHC list (CMR 1B reproductive toxicity, PBT). D5 is restricted in EU rinse-off cosmetics for environmental persistence.
All 1 product with Cyclic Siloxanes D4 / D5
Where Cyclic Siloxanes D4 / D5 shows up
- Skin Care 1 product
Higher-scoring picks without Cyclic Siloxanes D4 / D5
Products from the same categories whose analyzed ingredient list does not include Cyclic Siloxanes D4 / D5, scoring 80 or above.
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