Ask the Jeune Skin Care Experts: Sunscreen Q & A

Sunscreen advice from our UW Health Transformations Jeune Skin Care aestheticians:


Q. When do I apply my sunscreen?


A. Unless you wear make-up, it should be the last product you apply to your skin in your skin care regimen. Many products are a dual combination of a moisturizer and sunscreen. Remember, SPF in make-up such as powders is an adjunct to your sun protection, not a replacement.


Q. How often do I apply my sunscreen?


A. In avid sun exposure, reapply every 2 hours as SPF protection ratings are based off of 2 hours of exposure. Be sure to apply a thick layer. If you use an SPF 30, but don't apply enough as recommended or needed, it works more like an SPF 15.


Q. What SPF strength should I be using?


beach basket with sunscreen; UW Health Transformations Jeune Skin Care sunscreen questions and answers; Madison, WisconsinA. Keep in mind the following equivalents:

  • SPF 15 equals roughly 93% protection
  • SPF 30 equals roughly 97% protection
  • SPF 50 equals roughly 98% protection 
  • SPF 100 equals roughly 98.5% protection 


There is no need to go beyond a SPF 50. The key is to slather it on and reapply as needed.


Q. What is the difference between a chemical and a physical based sunscreen?


A. Chemical based sunscreens effectively work by absorbing the UV rays into the skin and releasing them as heat. Specific ingredients may include Avobenzone, Homosalate, Oxtinoxate, Octisalate and Octocylene.


Physical based sunscreens effectively work by deflecting the UV rays off of the skin, like raindrops hitting a windshield. Specific ingredients include Titanium Dioxide and Zinc Oxide. If you have sensitive or sensitized skin, along with skin disorders like rosacea, physical based sunscreens are better choices, as they are less irritating.


Often, you may see a combination of sunscreen ingredients such as Octinoxate and Octisalate (chemical) and Titanium Dioxide and Zinc Oxide (physical).


Most importantly, sunscreen should be applied every day, all year long. If the rays weren’t out it would be as dark as midnight. "An ounce of prevention is worth a pound of cure."


July 2015 Discount: 20% Off All Sunscreens


Share This StoryCheck out our line of SkinCeuticals, LaRoche-Posay, NIA 24, Obagi and Revision Intellishade sunscreens at UW Health Transformations, located at 2349 Deming Way in Middleton, Wisconsin. Throughout July 2015, get 20% off all sunscreens