If YOUR makeup Has spf, YOU Don’t NEED additional SUNSCREEN.
"Even though there is SPF in your makeup, you’re not able to maximize its coverage. That’s because you have to apply seven times the normal amount of foundation and fourteen times the normal amount of powder to get the sun protection factor on the label. So, it's best to combine SPF makeup with a sunscreen."
THE HIGHER THE spf, THE BETTER.
"SPF is based on the ability of sunscreen to prevent erythema or reddening of the skin after sun exposure. If you compare one sunscreen to another in terms of SPF, you can tell how much one formulation of sunblock delays skin redness. This however, does not tell us how effective the sunscreen is in preventing damage to the skin. The recommendation is to apply an SPF 30 or higher." "When used correctly, sunscreen with SPF 30 to 50 offers as strong protection as compared to a sunscreen with SPF 80 to100."