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
Astaxanthin: Nature's Powerhouse Antioxidant for Skin Health
Did you know that astaxanthin, the vibrant red pigment giving salmon its signature color, is nature's most potent antioxidant—up to 6,000 times stronger than vitamin C at neutralizing free radicals? Or that this marine-derived wonder, produced by tiny algae under stress, can help your skin bounce back from daily assaults like sun exposure, pollution, and aging?…
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…
5 Things to Look Out For With Cheap Sunscreens
From founding New Zealand's largest skin cancer clinic chain, the Skin Institute, to pioneering MoleMap with over 100 clinics worldwide, my career has been dedicated to prevention. Sunscreen is a cornerstone of that effort – but not all sunscreens are created equal. In today's market, cheap options flood shelves and online stores, promising protection at a bargain price. While affordability is appealing, these products often cut corners on quality, safety, and efficacy…
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…
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…