Whisk Lavender Vanilla Bean Sugar and water together in a small saucepan. Bring mixture to a boil, stirring to make sure sugar dissolves, and cook for 1 to 2 min. Remove from heat and add Herbes de Provence. Cover and allow mixture to steep until room temperature, about 20 min. Strain and store in a sealed container in the refrigerator. Use within 2 weeks.