It is the perfect oil to use if you are trying to fade acne scars. A lot of people use it to lighten the skin or achieve even skin tone. It’s a light oil and will not clog your pores so if you have acne-prone skin, you need not worry. I believe it is best to use Rosehip oil at night. I won’t use this or any other oil for that matter in the morning. I say this even if you are not going to wear makeup. It shouldn’t be used during the day to prevent sunburn and irritation. Using any type of oil under direct sunlight is not a good idea except of course, you’re trying to tan. To maintain the potency of your Rosehip oil, keep it away from light and air. It does not need to be refrigerated but at least kept in a cool place.