If you keep putting on sunscreen will your skin get lighter? (Picture)?

so all spf means is the time frame you have until the effect wheres off, for example: 30 spf = aproximently 30 mints before you need to reapply. now the only way to get lighter skin is to stay out of the sun. sunscreen wont make you lighter at all. infact youll still get darker, your just protected from the uv rays. putting on sunscreen while your not in the sun obviously isnt gonna do jack for you, maybe just moisturize your skin.