Dear Savvy Derm Diva,
What exactly does SPF stand for, and why do I need a Broad-Spectrum Sunscreen?
Needing Sunscreen 101, Ashley R.
Dear Needing Sunscreen 101,
I am so happy you asked, as I always get this question in the clinic. SPF stands for “Sun Protection Factor” and was initially designated by the FDA in 1978 to prevent