In a mixing bowl, combine 1/2 cup of Epsom salts and 1/2 cup of baking soda.
Stir in 15 drops of lavender essential oil and 15 drops of sandalwood essential oil.
Mix in 1 tablespoon of dried lavender and 1/8 teaspoon of hibiscus powder (optional for color).
Incorporate about 1 tablespoon of rose petals, or as many you want.
Gradually mix in 2 tablespoons of water to form a paste-like consistency.
Press the mixture firmly into the heart-shaped silicone mold.
Let the steamers dry overnight, then store them in an airtight container.