floss
Pure Silk Floss
For users seeking a completely plastic-free, biodegradable option, Radius Silk Floss is the premier choice. It uses 100% pure silk spun in a fair-trade cooperative in Colombia, avoiding the microplastics associated with nylon or polyester floss.
Quality & Materials
100% Silk thread, Candelilla wax (vegan-friendly options available, though their flagship uses Candelilla). No synthetic flavors, colors, or glutens.
Evidence & Testing
Silk is a traditional flossing material. While it lacks the high-tech 'expanding' features of Dr. Tung's, it provides natural friction that is superior to plastic tapes for plaque removal.
Brand Transparency
Radius provides good information on their fair-trade sourcing and the sustainability of their silk production, though they lack the clinical clinical-trial data of Cocofloss.
Value Assessment
At $6-7 for 33 yards, it is reasonably priced for a specialty, sustainably sourced material, though silk is inherently more prone to shredding in very tight teeth than polyester.
Why Not Alternatives?
Most 'eco-friendly' flosses are still made of corn-based PLA (plastic) which requires industrial composting. Radius uses actual silk which is naturally biodegradable and compostable at home.
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