HeartFeltMelts scented soy wax melt products are maximum scented to fill your home with scent for days and outperform all of our competitor melts or tarts. Each of my individually packaged Signature Melts is 1-ounce in weight. HeartFeltMelts are hand poured from natural 100% soy wax, free from any dyes or additives. The fragrances and essential oils I custom blend into my Melts have a rich, true, full-bodied quality giving them superior everlasting scent throw. Each Signature Melt will last from 48 to 60 hours on average.