We are proud to be licensed stockists of Bio-Glitter®. This biodegradable glitter is made from plant cellulose, mainly sustainably sourced Eucalyptus trees. Don't worry, it won't biodegrade in the pot or bag, only when it's washed off and gets to meet soil, compost and waste-water where micro-organisms are present. Then it will leave the Earth in around 90 days.
It's just as sparkly as non bio-glitter, but as it's made from plants it may be resistant to come solvents used for nails (it works fine with both of our glues though!).