It makes sense in theory: If you're super pale and you burn easily, you should use the highest SPF you can find when you go out in the sun, right? Not necessarily. The reality of what various SPFs offer in the way of protection -- and which ones you should be using -- is a bit more complicated than that.
If we think of all the Star Signs as ingredients that make up our character the recipe becomes nuanced and complex. The position of the Sun sign represents the personality. The Moon position describes our emotional responses and the Ascendant (determined by the birth time) describes the face we show to the outside world.