Dear Iris: The Sunscreen Scoop
Dear Iris,
I’ve heard from another patient in the treatment room that I should look for zinc oxide or titanium dioxide in my sunscreen. Are they really better? What should I look for in sunscreen, especially as I’m undergoing chemo?
H
Dear H,
Great questions—zinc oxide and titanium dioxide are physical (mineral) sunscreen ingredients that offer strong, broad-spectrum protection from UV rays. They sit on top of the skin and reflect the sun’s rays, unlike chemical sunscreens that absorb into the skin.
Dermatologists recommend physical (mineral) sunscreen for people with sensitive skin. If you are looking for a gentler option for sensitive or treatment-affected skin, some patients undergoing chemotherapy or radiation treatment choose mineral sunscreens.
Most importantly, the American Academy of Dermatology, recommends you use a sunscreen that offers all of the following:
SPF 30 (or higher)
Broad-spectrum protection (UVA/UVB)
Water resistance
If you find a mineral sunscreen you like the feel of—stick with it!
The best sunscreen is the one you’ll actually use—often and generously—remember to reapply every two hours when outside, and don't forget to apply it to the tops of your feet, your neck, your ears, and the top of your head. These areas are often forgotten.
Jessica Suarez, BSN, RN, OCN
Senior Oncology RN
Iris Oncology
After working in various specialties throughout her career as a nurse, oncology holds a dear place in Jessica Suarez’s heart. Having supported family members and friends through cancer care has greatly impacted her desire to serve this specific population. Jessica has significant clinical experience working with head and neck, esophageal, and lung cancers and is passionate about working with patients to identify barriers or gaps in care and empowering them with the tools necessary to overcome them.
This article meets Iris standards for medical accuracy. It has been fact-checked by the Iris Clinical Editorial Board, our team of oncology experts who ensure that the content is evidence based and up to date. The Iris Clinical Editorial Board includes board-certified oncologists and pharmacists, psychologists, advanced practice providers, licensed clinical social workers, oncology-certified nurses, and dietitians.
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