Sunscreen: What You Should Know
Written by Sam D’Alessandro, PA-C
How does sunscreen work?
Chemical sunscreen: absorbs UV rays and disperses them
Pro: rubs in cleanly with no residue
Con: there’s some debate about the chemicals and their impact on our health
My take: What we do know is that sunscreen prevents skin cancer, and sunscreen has been used by millions of people for decades with not yet enough evidence to suggest that we shouldn’t be using it.
Physical sunscreen: slightly absorbs UV rays, but mostly deflects UV rays off of skin
Pro: may be better for those with sensitive skin
Con: can be thicker and more of a white or opaque appearance
What number SPF do I need?
Studies show that SPF of 30-50 gives you about 97% sun protection and higher SPF isn’t really necessary (and is often more expensive!)
Spray or cream?
If you apply it correctly (yes, you need to rub in spray sunscreen) then either one works. Whichever one you prefer and will actually wear on a regular basis is my recommendation.
How do I wear it?
REAPPLY. REAPPLY. REAPPLY. Every 2 hours. This is the mistake most of us make, we put it on when we get to the beach, and then go the rest of the day without it. That means that we’re protected for about 90 minutes and then the rest of the hours our skin is free to fry!
Reminder: When you get out of the water, or finish a sweaty outdoor workout, reapply!
Does sunscreen expire?
Yes, you should refer to the recommendation on the packaging, especially if your sunscreen is frequently exposed to sun and heat.
Things I tell all of my patients:
You will still get tan with sunscreen on.
You should be wearing sunscreen every, single day.
If you have dark skin, and don’t burn, you STILL need to wear sunscreen!
Don’t forget your scalp, ears, and your lips!
What I wear:
Every day: Unseen Sunscreen by Supergoop
Reapplying over makeup: Re(Setting) Mineral Powder by Supergoop
Fun extras:
Sun shirts - I love having these as an option when I’m in excess sun for long periods of time.
Big hats - my personal favorite, great cheap options on Amazon!
Bottom line: My recommendation is always whatever sunscreen you will actually wear.
And if you have questions or want to go over sunscreen recommendations more, or have your skin checked, schedule an appointment!