Why & How to use Sunscreens | Dr Davin Lim (Melasma focused)

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How to choose SUNSCREENS?
What is the BEST SUNSCREEN?


Sunscreen are the basis of skincare, offering essential protection against harmful UV rays and promoting healthy skin. If I had to choose just one skincare product, sunscreen would be my top pick. Its benefits include reducing pigmentation, shielding against UVA rays that can lead to skin cancer, and combating collagen breakdown and solar elastosis. By blocking UV rays, sunscreen also minimizes the production of free radicals, which can damage skin at the DNA level. With up to a 95% reduction in free radical production, sunscreen emerges as a powerful defense against premature aging and skin damage.

Understanding sunscreen can be daunting due to its complex formulation, which varies according to regulations set by governing bodies such as the TGA, FDA, and CE Board. While the distinction between physical and chemical sunscreens is commonly known, many countries permit hybrid sunscreens that combine both types, often incorporating nanoparticles like zinc or titanium. Despite regulatory standards focusing primarily on SPF and burn time, some brands prioritize UVA protection, such as La Roche's Anthelios XL and products containing avobenzone for long-wave defense.

For optimal sun protection, consider the following tips:

Choose a sunscreen that feels pleasant on your skin, as individual preferences vary. Brands like Invisible Zinc and La Roche Posay offer cosmetically elegant options favored by many.

Enhance sun protection with hats or physical barriers, especially for prolonged exposure to long-wave UVA and visible light, which sunscreens may not fully block.

Apply sunscreen regularly, ideally twice daily, and more frequently during outdoor activities like beach outings or exercising.

Use the recommended amount, typically 5 grams to cover the face, ears, neck, and décolletage. Physical sunscreens provide immediate protection, while chemical ones require application 20 minutes before UV exposure.

Whether addressing melasma, sun spots, or ethnic skin rejuvenation, sunscreen remains a vital component in skincare routines. I owe much of my knowledge in photobiology to Dr. Gillian Murphy, whose mentorship during my formative years shaped my professional journey.

Thank you for watching this video. Don't forget to share, comment, and subscribe for weekly updates. Dr. Davin Lim, Dermatologist, Brisbane, Australia.