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UVA: How it ages you daily and what to do about it


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73 replies to this topic

#61 Maecenas

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Posted 18 September 2014 - 07:13 AM

Today I made a new expirement with beads and the results are really scary. At 10 am they all achieve 30-40% of their brightness in 2-3 meters from the window without a direct sunlight. New reason for paranoia.


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#62 Maecenas

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Posted 19 September 2014 - 04:07 PM

From now on these beads would be my kryptonite, will take them wherever i go.



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#63 Maecenas

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Posted 20 September 2014 - 08:58 PM

Beads beads beads https://www.youtube....h?v=hefhyXckVCQ


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#64 Heyman

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Posted 21 September 2014 - 11:15 AM

Thanks! I will buy some beads.


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#65 Logic

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Posted 23 September 2014 - 03:15 PM

Comparing the effects of mitochondrial targeted and localized antioxidants with cellular antioxidants in human skin cells exposed to UVA and hydrogen peroxide

"...this study compared the protective effects of mitochondria-targeted and -localized antioxidants (MitoQ and tiron, respectively) with cellular antioxidants against oxidative stress-induced [UVA and hydrogen peroxide (H2O2)] mitochondrial DNA (mtDNA) damage in human dermal fibroblasts. With the use of a long quantitative PCR assay, tiron (EC50 10 mM) was found to confer complete (100%) protection (P<0.001) against both UVA- and H2O2-induced mtDNA damage, whereas MitoQ (EC50 750 nM) provided less protection (17 and 32%, respectively..."

http://www.fasebj.org/content/28/1/485

Hmmm...! That sounds so good I wonder if it can be taken internally for full body protection? :)

#66 Logic

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Posted 23 September 2014 - 03:43 PM

Tiron protects against UVB-induced senescence-like characteristics in human dermal fibroblasts by the inhibition of superoxide anion production and glutathione depletion.

"...Tiron blocks UVB-induced glutathione depletion and increase of superoxide anion and protects against UVB-induced senescence-like characteristics in human dermal fibroblasts..."

http://www.ncbi.nlm....pubmed/22734867

It seems that it can also be used internally and is an intracellular chelator of free Iron and many other toxic metals..!

I'm starting a new thread.



#67 Heyman

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Posted 24 September 2014 - 10:57 AM

I'm not sure if 100% reduction in radicals is a good thing... I mean they have a function in the body like communication between the cells, don't you think there is a risk involved?



#68 niner

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Posted 24 September 2014 - 01:23 PM

I'm not sure if 100% reduction in radicals is a good thing... I mean they have a function in the body like communication between the cells, don't you think there is a risk involved?

 

Good point, but technically it wasn't an elimination of radicals, rather it was an elimination of mtDNA damage.  That seems like a good thing.



#69 acephale

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Posted 21 June 2015 - 03:19 PM

I currently use black plasticbags over my apartment windows for blocking UV, does anyone know if that sort of plastic blocks sufficiently? UVA in particular..



#70 mustardseed41

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Posted 21 June 2015 - 07:12 PM

I currently use black plasticbags over my apartment windows for blocking UV, does anyone know if that sort of plastic blocks sufficiently? UVA in particular..

 

If the plastic bag is blocking most if not every bit of visible light, I would think it is more than sufficient in blocking UVA rays.

The glass itself is blocking some degree of UVA also.


Edited by mustardseed41, 21 June 2015 - 07:13 PM.


#71 Maecenas

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Posted 22 June 2015 - 04:32 AM

 

I currently use black plasticbags over my apartment windows for blocking UV, does anyone know if that sort of plastic blocks sufficiently? UVA in particular..

 

If the plastic bag is blocking most if not every bit of visible light, I would think it is more than sufficient in blocking UVA rays.

The glass itself is blocking some degree of UVA also.

 

The average window glass can block from 15% to up to 40% of UVA. It blocks UVB totally. Some people on this forum also raised an awareness that IRA radiation can significantly contribute to skin damage.



#72 The Beauty of Peace

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Posted 23 June 2015 - 06:12 PM

Did anyone already test any sunblocks with those beads??


Did anyone already test any sunblocks with those beads??



#73 Heyman

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Posted 24 June 2015 - 06:00 AM

Did anyone already test any sunblocks with those beads??


Did anyone already test any sunblocks with those beads??

 

Tried with Biore UV Aqua Rich. Didn't work so well but I'm not sure putting some sunblock on plastic actually works as well as when it forms a film on your skin.



#74 Maecenas

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Posted 24 June 2015 - 07:57 AM

 

Did anyone already test any sunblocks with those beads??


Did anyone already test any sunblocks with those beads??

 

Tried with Biore UV Aqua Rich. Didn't work so well but I'm not sure putting some sunblock on plastic actually works as well as when it forms a film on your skin.

 

I think you can test only physical sunscreens to a certain degree. I tried several sunscreens and beads get their color somewhat slower and don't become as bright for somewhat longer time, compared to those without sunscreen. But I don't think it's a good way to test sunscreen efficiency. Those beads are very sensitive and even if sunscreen allows 20% of UVA, they'd get bright color. I put my sunglasses over them - and they blocked UVA completely.


Edited by Maecenas, 24 June 2015 - 07:59 AM.





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