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Wed Oct 01, 2014 1:52 pm  |
I understand that unstable chemical suncreens are ineffective, but do they themselves cause harm to the skin (beyond allowing UV damage due to their inefficacy)?
As well, what are the opinions on Helioplex, found in Neutrogena sunscreens, in regard to a safe, stable sunscreen ingredient?
Thanks! |
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Thu Oct 09, 2014 5:24 am |
EWG has amended their list of "unstable" ingredients now. Unfortunately they dont review the superior EU sunscreens. http://www.ewg.org/2014sunscreen/the-trouble-with-sunscreen-chemicals/
Tinosorb (EU hybrid filter) stabilizes avobenzone and several other chemical ingreds, and is itself a broad spectrum stable filter that isnt ghost-looking. Its hard to find a Tinsorb-only sunscreen so I use Uriage BarieSun Childrens SPF50+ which is formulated w/o silicones and fragrance. It has a small amount of avobenzone and I dont know why, since tinosorb is sufficient on its own as UVA and UVB protection.
Neutrogena's Helioplex is just stabilized avobenzone. http://en.wikipedia.org/wiki/Helioplex
EVERYTHING causes free radicals to form, so its jst a matter of degrees. Breathing causes chemical reactions that trigger free radical formation. We couldnt survive w/o them. Balancing them is the key. |
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✪ My go-to products: MyFawnie.BigCartel.com ✪ |
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Thu Oct 09, 2014 2:50 pm |
Agreed on the formation of free radicals.
So, wouldn't stabilized avobenzone (Helioplex) be good, then? |
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Thu Oct 09, 2014 3:50 pm |
The Neutrogena SS are reasonable cost and easy to find in the drugstores. Yes, it is stabilized. The Helioplex is a marketing term that Neutrogena uses.
If the Neutrogena is working for you (without irritation or clogging pores, etc.) I would continue.
You can always upgrade your sunscreen later. It is really difficult to find a sunscreen that works for you! |
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Canadian with fair skin. 50+ years old sensitive and reactive. |
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Thu Oct 09, 2014 4:52 pm |
| Yes, but my underlying question is, why would I need to upgrade if Helioplex is stable and effective? |
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Thu Oct 09, 2014 7:22 pm |
There is different measurements of sunscreen protection. SPF refers to UVB rays. If you look at the European ratings, they focus more on UVA. PPD (Persistent Pigment Darkening) rate also considers UVA.
Sunscreen is very complex. Even more frustrating is that if you are acne prone or clog prone, it is even more difficult to find a sunscreen that works for you. I have had reactions to sunscreen ie: Clinique Super Sheer spf 25. (I believe it was the botanical that caused a rash.)
I look for something that I can wear most days without problems. On days when I know I will be out more (family BBQ for example) I will wear a heavier, more protective sunscreen. I look for SS that has reliable UVA protection but I do need to avoid certain chemicals. I am consistent in wearing SS and will also use sunglasses, etc.
I really can't explain sunscreen theory well, so hopefully someone else will post with a better explanation. |
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Canadian with fair skin. 50+ years old sensitive and reactive. |
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Thu Oct 09, 2014 8:52 pm |
| EthelM wrote: |
| Yes, but my underlying question is, why would I need to upgrade if Helioplex is stable and effective? |
No need to upgrade. Helioplex is the best chemical sunscreen available in the US and as has been stated, is photo stable. I personally use a high % zinc oxide sunscreen (Burnout). Some people can't seem to ever find one they are comfortable with. Too greasy or leaves them looking like a mime. Some people refuse to use chemical sunscreens.Some people, including myself, think that European sunscreens with Tinosorb M are superior to chemical sunscreens in the US. Maybe even better than zinc oxide but it's a close race. Actually Tinosorb M is both a physical and chemical sunscreen. Very unique in that regard.
While banned in America as an ingredient, you can order a Tinosorb sunscreen online. This is about the best deal out there on a Tinosorb M and Tinosorb S sunscreen. It broke my face out but was great for my body. http://pharmamundi.com/skin-care/skin-sun-care/bioderma-photoderm-spf-30-spray-400-ml.html
Helioplex is said to maintain over 85% of UVA protection after 5 hours. http://www.neutrogenamd.com/category/sun/helioplex-.do
I would assume zinc oxide and Tinosorb would fare better than that but it's just a guess.
And the broken record that can't be repeated enough: Unless your using the proper amount (aprox. 1/4 tsp for the face and the same amount for the neck) your selling yourself way short in the protection dept. |
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Fri Oct 10, 2014 11:51 am |
Thanks Panda, that's the info I was interested in. I'll stick with Helioplex. Blocking 85% of UVA after 5 hours is pretty darn good, and as it doesn't irritate my skin, I'll happily continue with it.
I'd prefer non-chemical UVA protection, but I don't do well with the whitened look that I get from zinc. |
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