Vybar is the modern alternative to stearin (stearic acid). Vybar is a polymer which is used primarily to aid in fragrance oil retention, although it also benefits the candle by increasing opacity and enhancing dye colors. When using vybar, wax can hold more fragrance oil without the fragrance oil separating from the mixture. This enables the candlemaker to put twice or even three times as much fragrance oil into their mixture. Recommended usage is 1/4tsp - 1/2 tsp per pound of wax but will vary per application. Don't overdo it, though, because too much vybar can actually trap the fragrance in your candle, reducing your candle's hot throw(describes the fragrance characteristics of a candle while it is burning).
