Microcrystalline and paraffin wax are both derived from petroleum, so it’s easy to assume that they can be used interchangeably. However, despite having many similar properties, there are some key differences between the two. The most distinct of those can’t even be seen with the naked eye, as it occurs at molecular level.
These molecular differences makes microcrystalline wax thicker and tougher, but in turn gives it much greater flexibility and elasticity. The two waxes also differ in colour, with paraffin generally being colourless while microcrystalline wax can vary from white to dark brown.