What happens next in this paragraph?

How to get fair skin naturally
Protect yourself from the sun.
Most of the normal darkening and discoloration of your skin is caused by exposure to the sun's ultraviolet (uv) rays. If you're extremely concerned about having fairer skin, staying indoors will keep your skin as light as possible.
When that's not possible, protect your skin use spf sunblock with a minimum spf of 30. Most dermatologists agree an spf 15 is not sufficient anymore.