u/Defiant-Plantain-115

hey all, so i have been going down the microplastic rabbit hole for quite some time now and my current interest is eco friendly/ biodegradable electric toothbrush heads.

i stumbled upon some other reddit posts but mostly ppl were looking to buy anew and i already have an electric toothbrush that i dont wish to throw away, my toothbrush is the oral-b io series 2 model, and although its considered an old model i just got it last october , i have found only this site https://thesustainabletomorrow.com/ which i also emailed to asked whether they'll develop more compatible heads in the future. but other than that im completely at a loss,please let me know if you know anything. thanks x