Just a thought as skin care is one of my interests… antioxidants that strengthen and accumulate in the skin, counteract the radiation damage from the sun. Antioxidants are often brightly coloured pigments (like beta carotene appearing as orange). Maybe using the fields that strengthen your skin like Skin Regeneration or Antioxidant field can build more resilience.
Otherwise, I did have success with a natural sunscreen that uses this very approach. It takes about 2 weeks of using daily to start working though. It’s by an Australian Company called Janesce. Easy to look up!