Laboratory Tests

What you use every day should be transparent, honest, and verifiable. 

While many toothbrushes marketed as “natural” simply replace the plastic handle with bamboo, they often still use synthetic nylon bristles. We chose a different path.

All CERTA toothbrush bristles are made from real, natural animal hair and are independently laboratory tested to verify their authenticity.

Using FTIR (Fourier Transform Infrared Spectroscopy) analysis, our bristles are confirmed to exhibit the protein-based structure of natural keratin fibers, with no indication of synthetic polymers such as nylon.

 

Boar Bristle Verification

 

Horsehair Verification