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Sat Jul 19, 2008 10:50 pm  |
they're not rated?...
I found there're many products out there that claim to have a SPF of whatever but it's not rated cuz of the cost. Although the product is at a reasonable low price but sometimes I feel a bit unsafe to use it. So my question is, do u ladies feel insecure about these kinda products then? Or it's ok to use it?...
For example, I'm interested in the Everyday Minerals loose finishing powder that claims to have a SPf of 30 although it's not rated. But I'm not sure if I should believe it or not cuz the ingredients didn't list the % of their Zinc and Titanium Dioxide...
so hhm...yeah just need some feedbacks  thanks |
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Sat Jul 19, 2008 10:58 pm |
yeah if it doesn't have a rated SPF ratio, just pretend it has no SPF.
There are SO many variables involved in creating an SPF rating. The FDA regulates it for a reason. |
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Sun Jul 20, 2008 1:58 am |
| edenfield wrote: |
yeah if it doesn't have a rated SPF ratio, just pretend it has no SPF.
There are SO many variables involved in creating an SPF rating. The FDA regulates it for a reason. |
yeah but what if u know the % of the ingredients? Is it still ok? |
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Sun Jul 20, 2008 7:46 am |
| I generally don't believe what they say, I just go by the % of zinc oxide. (I prefer zinc oxide to titanium dioxide) I hate it when companies don't list %, that's generally enough to turn me off a company. But you can also try contacting them asking for that info. |
_________________
24 yrs old. favorite sunscreen right now: Burnout [now 35] |
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Sun Jul 20, 2008 11:34 am |
| Stardustdy wrote: |
| edenfield wrote: |
yeah if it doesn't have a rated SPF ratio, just pretend it has no SPF.
There are SO many variables involved in creating an SPF rating. The FDA regulates it for a reason. |
yeah but what if u know the % of the ingredients? Is it still ok? |
Yes and no, because SPF can change with other ingredients that don't have SPF.
For example silicone in sunscreens tend to increase SPF because it causes the material to spread more evenly, same with things like polymers, etc. |
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Sun Jul 20, 2008 2:37 pm |
| Like edenfield, if its not rated I just ignore any possible of spf claim. Also mineral makeup is not reliable for sun protection even if it is rated. |
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Sun Jul 20, 2008 9:09 pm |
| So the Devita that many ppl are raving about is not really reliable since it's not rated? It has 14% Zinc Oxide and claims to have a SPF of 30. I always wonder why those companies don't rate their product... I mean they can always sell it out at a higher price. Is it cuz the govn't doesn't approve it? hhm |
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Mon Jul 21, 2008 1:51 am |
Hi everyone
SPF only refers to the product's ability to block/absorb UVB rays that prevent burning. The rays that cause long-term skin damage and ageing are UVA rays. I think in the US a group of people are taking a well-known manufacturer to court because they feel they were misled into believing that an SPF 30 would give 30-fold protection against all sun damage, whereas the UVA protection was minimal.
Even if a product claims to give 'broad spectrum' protection, the UVA protection can be very low.
As far as I know there's no product apart from proper sunblock that gives adequate protection from UVA and unless things have changed recently, the chemical UVA filters approved by the FDA begin to break down on exposure to sunlight, so offer only limited protection. European sunblocks such as Anthelios are much more effective, and in the UK Boots have just begun to sell a range with stable UVA filters.
The ingredients that effectively block UVA are Mexoryl, Tinasorb or Parsol, but if you buy from Europe there's a star-rating system for UVA protection, so you can just loook for 5 star (ultra). Blessings to Mag from YTF for her patient explanations about all this a few years ago. Is she ever on this board? I miss her.
All best,
LL |
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