Kallgren Dermatology Clinic is your local dermatologist in Boulder. We treat common skin problems and carry a number of products designed to keep your skin looking young. One of our favorites is EtlaMD sunscreens. It is well known that damage from the sun causes premature aging of the skin and that next to staying out of the sun altogether, a good sunscreen is your best defense against sun-damaged skin.  A walk down an aisle of any drug store will remind you of the staggering number and variety of sunscreens available. Here are some common questions and answers about sunscreens to help you choose the best sunscreen for you and your family.


Should I use a broad spectrum barrier sunscreen?


  • Yes, only broad spectrum barrier sunscreen gives your skin a physical layer of protection against UVA and UVB rays of the sun.


How do barrier and chemical sunscreens work?

  • Barrier sunscreen acts essentially as a mirror, reflecting the rays of the sun away from your skin.
  • Chemical sunscreens are absorbed by the skin and when the rays of the sun interact with the sunscreen, the UVA rays are broken down before they get to the layer of the skin where the damage takes place. Yet other chemicals break down the UVB rays.
  • Some people are uncomfortable with the idea of a chemical reaction taking place in their skin and these people prefer to use a barrier sunscreen.


Knowing which kind of sunscreen to buy can make the difference between healthy skin and skin that looks old before its time. Kallgren Dermatology carries EltaMD barrier sunscreen. Call today for an appointment.