A layer of paint can be painted inside the mold. If you want the water not to hang in the acrylic mold, you can put a layer of paint inside the mold to prevent the water from sticking to the wall, or you can put a stabilizer in the box. Acrylic mold is the most common candle mold, mostly cylindrical, cuboid, pyramid-free and other geometric shapes, with low price and large choice space.