What happens when you layer a lower spf on top of a higher spf?

For example... put on sunscreen with spf 50 then put on suntan oil with spf 4? i know it reverses the point. i want to get a tan but not burned.What happens when you layer a lower spf on top of a higher spf?
tanning IS burning, just to a lesser degree, and it dries out the skin and makes you look way older before your time, why would you want to look forty when you are only thirty?


As for layering spf lotions.....no, you will not tan, the higher spf functions regardless, and spf 50 still only gives you thirty minutes in the sun before damage sets in.What happens when you layer a lower spf on top of a higher spf?
Nothing different happens.. you can't add the two together and get a higher SPF. Just stick with the 50 and you'll be fine..but add it thick and every few hours. Any sun is damaging to the skin...though we need sun for health, (vit D) and frankly the sun just makes us feel better..but to much is not good.. use the tan in the can or tube.. it works great.. or get a spray on tan.. don't use tanning beds.