Streaking is much less of a problem, products are better absorbed by skin and stay put more, and color looks more natural. A lot of improvements have been made in formulating the products. With better knowledge of DHA, adjustment of the pH to be more like skin (slightly acidic), oils that cause DHA to deteriorate are not used, and other color-enhancing materials (like sugars) are used to give the most natural self-tan." Other improvements include adding a tint to self-tanners so one can see where the product has been applied. Products include alphahydroxy acid, which is supposed to smooth and even out the skin surface. And some products include sunscreen properties. In order to mask the unpleasant odour companies producing self-tanners have added fragrance such as amber-vanilla, while another company has added the scent of watermelon. [open for interpretation] In the future, more fragrances may be added to entice the consumers to purchase a variety of self-tanners. Application technique improvements may be a focus of chemical companies to ensure the satisfaction of consumers who in the coming years will spend less time in the sun as skin cancer statistics rise. More studies in areas of skin pH and acidity as related to product chemical composition and more research in the area of sunscreen and UV light absorbtion will make for a more complete produc, in which sunscreen may be incorporated to provide protection from skin cancer while maintaining the much desired appearance of a tan.