After two hours zinc oxide sunscreen loses effectiveness, becomes toxic: study

Re:After two hours zinc oxide sunscreen loses effectiveness,... by teslabox on Friday October 15, 2021 @04:14PM (#28882609)

The antidote for damage from UV light is the pro-metabolic effects of red light. Red light hits the red metal (copper) in the Cytochrome C Oxidase enzyme [0] in our mitochondria and refreshes this enzyme. When the cells have enough energy (ATP) they can repair the damage from UV light.

[0] https://en.wikipedia.org/wiki/Cytochrome_c_oxidase (no mention of red light therapy in this article).

UV light from the sun comes with plenty of red light. UV light from the tanning bed does not have any red light. In the winter I used to go tanning, then would spend 12 minutes in the bright-light room [1].

[1] at Planet Fitness. The company website doesn't have any information, but I found this page: https://thelifevirtue.com/total-body-enhancement-pros-and-co...

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Re:After two hours zinc oxide sunscreen loses effectiveness,... by jml7c5 on Saturday October 16, 2021 @07:20AM (#28887095)

I was curious so performed a brief search. What are your thoughts on this study, which suggests that cytochrome c oxidase is not involved in the effect?: https://doi.org/10.1016/j.jphotobiol.2019.03.015

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Re:After two hours zinc oxide sunscreen loses effectiveness,... by teslabox on Saturday October 16, 2021 @05:24PM (#28891682)

I think your link is interesting, in that the group without the copper enzyme also benefited from red light exposure. The copper enzyme explanation seemed reasonable to me, but perhaps there’s better explanation for why people seem to benefit from red light exposure. Maybe the benefit from red light it multifaceted.

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Re:After two hours zinc oxide sunscreen loses effectiveness,... by toomuchtodo on Friday October 15, 2021 @09:03PM (#28884752)

This explains the therapeutic benefits of red light on retinal tissue.

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