SPF, PPD, PA, UVA, UVB – What do all these letters really mean?
You pick up a sunscreen bottle and see a confusing mix of letters and numbers. SPF 50, PA++++, broad spectrum, PPD 16. It feels overwhelming. Yet understanding SPF PPD PA…
The whole universe is for you
You pick up a sunscreen bottle and see a confusing mix of letters and numbers. SPF 50, PA++++, broad spectrum, PPD 16. It feels overwhelming. Yet understanding SPF PPD PA…