Episode 5: SPF Is Not Optional

Sunscreen is the one non-negotiable in this deep dive on SPF, UVA vs UVB, reapplication, why melanin-rich skin still needs daily protection, and how it all connects to hyperpigmentation and the retinoid rabbit hole. Because “I don’t burn” isn’t the same as “I’m protected.”

Show notes

Why "I don't burn" isn't the same as "I'm protected" — the physics of UVA (deep, silent, ageing) vs UVB (surface, burns)
Chemical sunscreen molecules degrade as they absorb UV — why reapplication after about two hours isn't optional
How unprotected UVA exposure feeds post-inflammatory hyperpigmentation and undermines barrier-damaging retinoid use