UV

links: Light reference:

• The Role of Geomagnetic Field Intensity in Late Quaternary Evolution of Humans and Large Mammals 9-6-2021

UV #

• Tretinoin etc. supposedly blocks the effects of UV-B, which fails to penetrate unlike UVA, but rather is responsible for melanogenesis. It also prevents the action of MMP and increases collagen deposition in the skin, and microvascular.

Tanning #

• Fruit over sunbed: carotenoid skin colouration is found more attractive than melanin colouration
• https://www.thetanningguru.com/tanning-advice-2/healthy-indoor-tanning-for-vitamin-d/ go for the highest UVB beds for tanning and vitamin D benefits.
  • https://raypeatforum.com/community/threads/whats-the-consensus-on-tanning-beds-how-does-it-compare-to-the-real-thing.43757/
• Base tan can take like 2 weeks of 5x/week tanning to build. 2x a week to maintain or so.