Dermatology Insights on
Sun Protection and Repair
Dr. Gray’s
Dr. Mark Gray
Dermatologist & Founder
MBChB, FRACP, FRCPC, FRCPA, ABPath, ABDermpath, FRSpecialist Dermatologist , Specialist Pathologist , Specialist Dermatopathologist , Cosmetic Surgeon, Mohs Surgeon.
Suncare Explained
Dermatologist’s
Insights – Sun Protection and Repair
Sunscreen Essentials
Top Stories
The Science of Suncare
All Stories
7 Best Zinc Oxide Sunscreens for Ultimate Protection
Zinc oxide has long been my go-to recommendation for effective, gentle sun protection in my dermatology practice. As a physical blocker, it creates a barrier on the skin's surface to deflect UVA and UVB rays, offering broad-spectrum defense without the absorption concerns of chemical filters. This makes it ideal for all skin types…
8 Best Sunscreens for Sensitive Skin – Dermatologist Tested
In this roundup, I've selected standout sunscreens for sensitive skin, prioritizing fragrance-free, non-comedogenic picks with calming ingredients like zinc oxide, ceramides, and antioxidants. These range from drugstore deals to high-end dermatologist-grade…
Micronized vs. Nanonized Mineral Sunscreens: Navigating Safety and Efficacy
Mineral sunscreens, using zinc oxide or titanium dioxide, have revolutionized suncare by providing physical barriers that reflect UV rays rather than absorbing them like chemicals. The key to their usability lies in particle size, but nanonized particles (nano <100 nm) raise concerns. Alarming stat…
The Indoor Sun Trap: Why Your Office Window Is a Skin Saboteur
Indoor UV is a sneaky foe—standard glass blocks UVB but lets 50-75% UVA through (Journal of Investigative Dermatology). A study of 84 office workers found those near windows had 170% more skin damage on exposed sides…
The Silent Epidemic: How Everyday Sun Exposure Accelerates Aging
Sun exposure is often romanticized as a source of vitality, but the science tells a different story. In my dermatology practice, I've observed that even brief daily UV exposure – such as a 20-minute walk to work…
Myth Busting: The Truth About “Safe” Tanning and Its Hidden Costs
The "healthy tan" myth persists, but evidence debunks it. Tanning is skin's distress response to UV injury, producing melanin as a shield – but it's inefficient, blocking only 50-70% of rays (British Journal of Dermatology). A large-scale study of 30,000 Swedes found tanners had 50% higher melanoma risk…