Doctor insights on:
What Is The Active Element In Sunscreen
Sunscreen: Sunscreens work via 2 possible ways: 1) chemical blocks that breakdown the uv rays as they pass through the skin and 2) physical blocks that prevent the uv rays from getting to the skin. I recommend the physical blocks (zinc and titanium) because they have a very good safety profile and work very effectively. If you are going to be in the sun - use a minimum of spf 15 - follow product directions. ...Read moreSee 1 more doctor answer
I've been at the beach for the last couple of days, wearing sunscreen with only zinc and titanium active ingredients, but my skin now itches. Why?
Inflammation: Hi. These sorts of skin reactions can happen with any sort of inflammatory process. You could simply be dried out from the beautiful sun and cool breezes. (I'm jealous). Or you might actually be sensitive to the topical agents that you've used (even though you may think that you shouldn't be). Everybody is different in this regard. Use some sort of hypoallergenic cream and hydrate with H20! ...Read more
Yes: Sunscreens have a shelf life of three years. After this, they start to lose their stability and efficacy. You should see an expiration date on your bottle of sunscreen and should use it before that date. If you don't see an expiration date, write the month and year you purchased it on the bottle and toss after three years. Do not use any sunscreen that has become lumpy or has turned an odd color. ...Read moreSee 2 more doctor answers
Neutrogena, Alta MD: The neutrogena helioplex and the anthelios by la roche posay are my favorites. For acne prone skin, the alta md uv clear works well. It is important to use sunscreens with both uva and uvb coverage. Spf value refers to uvb protection. The new fda ruling requires uva protection labeling, which will be presented as + (lowest), ++, or +++ (highest). Reapply every 2 hours while in the sun. ...Read moreSee 2 more doctor answers
Sunscreen: Sunscreen combines organic and inorganic chemicals to filter the light from the sun so that less of it reaches the deeper layers of your skin. Like a screen door, some light penetrates, but not as much as if the door wasn't present. Sunblock, on the other hand, reflects or scatters the light away so that it doesn't reach the skin at all. ...Read more
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