The skin does not forget what it experienced, be it good or bad. Sunburn is one of them and it can become incapable of self-defense when exposed to the sun frequently. Experts agree that the skin should be protected from the harmful lights of the sun, not only on sunny summer days, but every day of the year, in all weather conditions. Therefore, experts recommend the use of a sunscreen of at least SPF 30 in summer and winter.