Sunscreen gives you the information you need to safely deal with harmful UV radiation.UV radiation affects human health both positively and negatively. Short periods of exposure to UVB radiation is beneficial as it generates vitamin D, but extended exposure can cause the following problems, particularly for people who spend unprotected time outdoors: - Skin cancer- Cataracts- Suppression of the immune system- Premature ageing of the skin Sunscreen app uses your current location and data from temis.nl to determine the maximum UV radiation for the current day and also the forcast for the next 7 days. Based on the UV data it provides information on how best to protect yourself from these dangers.Copyright KNMI/ESA; http://www.temis.nl/