Dandelion Oil for Muscles and Skin 1 Harvest blossoms on bright sunny days, ideally between 1 and 2 pm, when they are fully open. 2 Soak the flowers in water for 20 minutes, drain, and repeat to remove dirt and insects. 3 Gently pat the flowers dry and leave them to air-dry for at least two weeks. 4 Place the dried blossoms in a clean jar and cover completely with a carrier oil such as olive, almond, or jojoba. 5 Let the mixture infuse for 2 to 6 weeks in a cool, dark place, then strain carefully to obtain your finished oil.