Suncream

1. Types of Sunscreens: Sunscreens are categorized as mineral-based, using zinc or titanium, and chemical-based, which absorb UV rays to protect the skin. Mineral sunscreens are often viewed as a physical barrier reflecting UV rays; however, studies indicate they may also absorb UV without chemical changes 1.

2. Supplemental Protection: Dr. Teo Soleymani highlights the use of polypodium as a supplement alongside topical sunscreens. It's beneficial for those sensitive to sunlight or having conditions like melasma, as it blocks visible light that some chemical sunscreens cannot 2.

3. Mineral vs. Chemical Sunscreens: Mineral sunscreens (like those with zinc oxide or titanium dioxide) are generally safe up to concentrations of 25% and do not penetrate the skin deeply. In contrast, chemical sunscreens can act as endocrine disruptors, and their safety is often debated due to potential systemic absorption when applied excessively 3 4.

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     Sunscreen Science

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     2

     Sun Protection Insights

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     3

     Sunscreen Safety Insights

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     4

     Sunscreen Myths Explored

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4. Efficacy of Sunscreens: While topical sunscreens are effective for protecting against melanoma and squamous cell formation, they have not shown a significant effect on preventing basal cell carcinoma, the most common skin cancer 4. Comprehensive sun protection strategies include using clothing and seeking shade 3.

These insights underscore the complexity of using sunscreens and suggest that a combination of methods, including clothing and supplements, might be more effective for sun protection.