Questions tagged [sunscreen-sunblock]
The sunscreen-sunblock tag has no usage guidance.
8
questions
1
vote
0
answers
42
views
Is how much you prevent sun damage and how much less you get tan and vitamin D an exact trade off? [duplicate]
Is how much you prevent sun damage and how much less you get tan and vitamin D an exact trade off?
I know the more sunblock you put on the less you tan, but is the mechanism of tanning purely ...
- 111
2
votes
0
answers
23
views
Is there any medical upside in using a sunscreen that isn't broad spectrum (i.e., protecting against UVA and UVB)?
I read on
https://en.wikipedia.org/wiki/Ultraviolet_index:
Because of the way the UV index is calculated, it technically expresses the risk of developing sunburn, which is caused mostly by UVB ...
- 10.3k
9
votes
1
answer
254
views
General Population Low Vitamin D Levels
In the answer to Is it advisable to wear UV protected swimsuit that covers arms and legs for skin protection to an outdoor swimming pool? by @Anko, it was stated that you can get enough vitamin D from ...
- 6,164
1
vote
0
answers
45
views
Is it better to tan for 10 minutes without sun protection or the equivalent x amount of minutes with sunscreen?
For tanning efficiency purposes (i.e. getting as tanned as possible with as little skin damage as possible) is it better to tan for 10 minutes without sunscreen or the equivalent x amount of minutes ...
5
votes
2
answers
428
views
How long is zinc sun block effective?
I am using "Eucerin Daily Protection, face lotion SPF 30" with zinc. The label says it is effective for 24 hours of moisturization. But does not say how long the SPF is good for. I realize that zinc ...
- 1,219
7
votes
3
answers
224
views
Does the use of sunscreen inhibit Vitamin D production?
Vitamin D is produced in the skin when exposed to sunlight.
Therefore, when using sunscreen on the skin, is Vitamin D production inhibited?
- 2,009
1
vote
0
answers
32
views
Physical sunscreen high SPF vs high active ingredient percentage
I'm looking at two products:
Product A contains active ingredients Zinc Oxide at 9.0%, and Titanium Dioxide at 7.0% for 113g. It has SPF 45.
Product B contains an active ingredient Zinc Oxide at 20% ...
- 11
1
vote
0
answers
27
views
Relationship between UPF/SPF and reduction in UV damage
I'm trying to untangle the relationship between the UPF/SPF rating of clothing or sunscreen and its effectiveness at reducing health risks from exposure to sunlight.
The first complication is that a ...
- 133