3 ms·

Does blue light affect the skin ?

pennaMan 11y ago
Yes, via melatonin http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1317110/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1317110/
- jensen123 11y ago
  I didn't know about that one. What made me suspect sleep was a few studies showing that a lack of sleep has a negative effect on various hormones: http://www.ncbi.nlm.nih.gov/pubmed/22844441 http://www.ncbi.nlm.nih.gov/pubmed/22844441 http://www.ncbi.nlm.nih.gov/pubmed/22787499 http://www.ncbi.nlm.nih.gov/pubmed/22787499 http://www.ncbi.nlm.nih.gov/pubmed/19955752 http://www.ncbi.nlm.nih.gov/pubmed/19955752 http://www.ncbi.nlm.nih.gov/pubmed/10543671 http://www.ncbi.nlm.nih.gov/pubmed/10543671 http://www.ncbi.nlm.nih.gov/pubmed/23078578 http://www.ncbi.nlm.nih.gov/pubmed/23078578 I found a couple studies on acne that mentions lack of sleep: http://www.ncbi.nlm.nih.gov/pubmed/18348416 http://www.ncbi.nlm.nih.gov/pubmed/18348416 http://www.ncbi.nlm.nih.gov/pubmed/21595660 http://www.ncbi.nlm.nih.gov/pubmed/21595660
- rogeryu 11y ago
  Artificial blue light does not contain UV light, and does not influence melatonin.
  - jensen123 11y ago
    Doesn't matter whether the light is artificial or not. If the wavelength is about 470 nm (blue), it will suppress melatonin. There's been done many experiments/studies on this - here are a few: https://www.ncbi.nlm.nih.gov/pubmed/11763987 https://www.ncbi.nlm.nih.gov/pubmed/11763987 https://www.ncbi.nlm.nih.gov/pubmed/14962066 https://www.ncbi.nlm.nih.gov/pubmed/14962066 https://www.ncbi.nlm.nih.gov/pubmed/20463367 https://www.ncbi.nlm.nih.gov/pubmed/20463367 https://www.ncbi.nlm.nih.gov/pubmed/22850476 https://www.ncbi.nlm.nih.gov/pubmed/22850476 https://www.ncbi.nlm.nih.gov/pubmed/19444752 https://www.ncbi.nlm.nih.gov/pubmed/19444752 https://www.ncbi.nlm.nih.gov/pubmed/20652045 https://www.ncbi.nlm.nih.gov/pubmed/20652045
cma 11y ago
He maybe just woke up earlier and started spending more time in the sunlight, which definitely helps with acne.

Yes, via melatonin http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1317110/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1317110/

jensen123 11y ago
I didn't know about that one. What made me suspect sleep was a few studies showing that a lack of sleep has a negative effect on various hormones: http://www.ncbi.nlm.nih.gov/pubmed/22844441 http://www.ncbi.nlm.nih.gov/pubmed/22844441 http://www.ncbi.nlm.nih.gov/pubmed/22787499 http://www.ncbi.nlm.nih.gov/pubmed/22787499 http://www.ncbi.nlm.nih.gov/pubmed/19955752 http://www.ncbi.nlm.nih.gov/pubmed/19955752 http://www.ncbi.nlm.nih.gov/pubmed/10543671 http://www.ncbi.nlm.nih.gov/pubmed/10543671 http://www.ncbi.nlm.nih.gov/pubmed/23078578 http://www.ncbi.nlm.nih.gov/pubmed/23078578 I found a couple studies on acne that mentions lack of sleep: http://www.ncbi.nlm.nih.gov/pubmed/18348416 http://www.ncbi.nlm.nih.gov/pubmed/18348416 http://www.ncbi.nlm.nih.gov/pubmed/21595660 http://www.ncbi.nlm.nih.gov/pubmed/21595660
rogeryu 11y ago
Artificial blue light does not contain UV light, and does not influence melatonin.
- jensen123 11y ago
  Doesn't matter whether the light is artificial or not. If the wavelength is about 470 nm (blue), it will suppress melatonin. There's been done many experiments/studies on this - here are a few: https://www.ncbi.nlm.nih.gov/pubmed/11763987 https://www.ncbi.nlm.nih.gov/pubmed/11763987 https://www.ncbi.nlm.nih.gov/pubmed/14962066 https://www.ncbi.nlm.nih.gov/pubmed/14962066 https://www.ncbi.nlm.nih.gov/pubmed/20463367 https://www.ncbi.nlm.nih.gov/pubmed/20463367 https://www.ncbi.nlm.nih.gov/pubmed/22850476 https://www.ncbi.nlm.nih.gov/pubmed/22850476 https://www.ncbi.nlm.nih.gov/pubmed/19444752 https://www.ncbi.nlm.nih.gov/pubmed/19444752 https://www.ncbi.nlm.nih.gov/pubmed/20652045 https://www.ncbi.nlm.nih.gov/pubmed/20652045

cma 11y ago

He maybe just woke up earlier and started spending more time in the sunlight, which definitely helps with acne.