Myth Busters
January 10, 2012 at 8:17 pm Derm RF 2 comments
Myth: 20 Plus 20 Equals 40
When it comes to SPF, traditional math doesn’t apply. The SPF 20 in your foundation layered with the SPF 20 in your sunscreen does not equal an SPF of 40. It’s more a matter of quality than quantity.
What layering does provide is accuracy. The truth is, most people don’t apply enough of their SPF to really deliver the SPF benefits and rarely apply it evenly on the first go-round. To get the promised benefits, multiple layers are essential and adding an SPF sunscreen on top of an SPF moisturizer and/or foundation is the best way to insure you’re truly covered.
So, do you layer up?
Entry filed under: Myth Busters. Tags: .
Derm RF
Mary Radford, RN
Dr. Katie Rodan
Dr. Kathy Fields
1.
patty | January 12, 2012 at 4:31 pm
great to know!! And layer your sunscreen too.
2.
Stacey McCarthy | January 11, 2012 at 9:37 pm
I put sunscreen on first then foundation or mineral powder with SPF. If makeup goes on first then sunscreen messes it up??