Where to find Paraffin Wax?

Does anyone know whether paraffin wax (like the kind used for candles) is sold anywhere? I want to buy it in a block to use. Would it be available somewhere like a Bipa? Or more so in a speciality shop?

Any tips appreciated if you know. I am closest to second/first districts, but am willing to travel across the city to get it if you know of a specific place.

Thanks in advance.