The opaque, semi-matte finish of soy candles is appealing to many consumers. While soy wax is known for often having a bumpy or cratered surface after burning compared to the very smooth post-burn surface of paraffin, this can be a benefit to those who want to be sure they are burning a naturally-derived product.
Another feature of soy wax to note is how well, and how easily, it adheres to the walls of the container once solidified. Glass adhesion is usually only important to those using clear containers.
We can’t talk about the appearance of soy wax candles without talking about frosting. Frosting is what we call the tiny crystal formations that appear on the top and sides of the wax. It does not affect the performance of the candle. All soy waxes will frost to some extent over time, but some waxes are less prone to visible frosting than others.