A: First you need to determine your SPF needs. There are options ranging from an SPF of 4 to 30. Consider how much time you spend in the sun, and whether or not you would like some color or none. Peter Thomas Roth has a fragrance free, paba free and non comedogenic moisturizer and it is oil free. Unfortunately, it is only 4oz. and does not go a long way. But how much is enough? According to the American Academy of Dermatology, one ounce of sunscreen, enough to fill a shot glass, is necessary to cover the whole body. However, you may need more moisture. So, it may be a personal preference. Ahava also produces an oil free sunscreen for the body with an SPF of 4. They are a bit more generous with 8oz. of product. Both of these products are found at Sephora.com. If you're looking for a less expensive approach, Neutrogena makes Healthy Defense SPF 45, which is oil free and also waterproof. You also get the added benefit of vitamins A, E & C. This can be found at any local drugstore.