Sunscreen is one of the most important steps in a daily skincare routine. The title itself can be misleading and many people think they only need to apply a sunscreen on a sunny day. Sunscreen should be applied daily throughout the year. UV exposure is the main cause of premature ageing as well as pigmentation disorders and skin cancer. Applying sunscreen daily helps to protect the skin from premature ageing and some will also contain anti-oxidants that reduce free radical damage too.