The original hard wax formula for Nova has been adapted to be in soft wax (strip wax) form. While the core parts of the formula remains consistent, there are some minor differences due to the distinct composition of soft wax compared to hard wax. The Nova Roll-On is the soft wax formula packaged conveniently in a cartridge.The Nova soft wax is vegan-friendly as it doesn't contain beeswax, and we kept it fragrance-free. The main thing to note is that unlike hard wax, soft wax doesn't fully dry down, hence the need for that paper removal strip. It's got a good grip on both hair and skin, so stick to just one pass over the skin to avoid any accidental skin lifts! Hard wax, on the other hand, may allow for 2-3 passes depending on individual skin sensitivity and reactivity.