Raspberry seed oil (not essential oil) has some sun protection factor (SPF) and it can be used in 2 different ways: -- As a sealant: Either mix a few drops with your regular sealant oil and apply as usual. -- As a spray: Use 1 part oil, 1 part water in a spray bottle. Make sure to shake the spray bottle well before each use as the water and the oil will separate. You can add optionally some potassium sorbate to ensure the preservation of the water based solution (1g for 200ml of solution).