This can be open to interpretation, but by and large, vegetable waxes (soy, coconut, rapeseed) are biodegradable and made from sustainable materials and therefore more eco friendly. Beeswax exploits bees but cleans the air around it when burned, and paraffin is a by-product of petrochemicals and lets off soot when burned. More information can be found on our blog Healthier Candles for Your Home.