How Is a Sunscreen Actually Evaluated Before It Reaches the Market?

Contrary to popular belief, a sunscreen cannot be sold simply because its ingredient list appears reassuring. Before being marketed in Europe, every sunscreen must comply with one of the world's most demanding regulatory frameworks.

Each formula undergoes extensive development and testing to demonstrate that it genuinely protects the skin from harmful ultraviolet radiation. Manufacturers must verify the advertised SPF level, prove adequate UVA protection, and demonstrate that the UV filters remain stable during sun exposure.

In other words, sunscreen performance is not determined by a simple list of ingredients. The entire formulation is evaluated to ensure that it meets strict European performance and safety requirements.

Why Is Photostability More Important Than an App Rating?

Although many consumers have never heard of it, photostability is one of the most important indicators of sunscreen quality. It refers to a UV filter's ability to maintain its protective performance after prolonged exposure to sunlight.

If a UV filter quickly degrades under sunlight, the level of protection gradually decreases throughout the day. Highly photostable filters, by contrast, continue protecting the skin consistently during normal sun exposure.

For this reason, modern sunscreen formulations increasingly rely on combinations of advanced UV filters capable of delivering broad-spectrum, long-lasting, and highly stable protection.

Mineral Sunscreens vs. Organic UV Filters: Which One Is Better?

The debate between mineral sunscreens and organic (chemical) UV filters has become increasingly popular. Unfortunately, it is often presented in an overly simplistic way.

Mineral filters such as zinc oxide and titanium dioxide are highly appreciated by consumers looking for formulations perceived as more "natural." However, they may produce thicker textures and leave a noticeable white cast, particularly on darker skin tones.

Modern organic UV filters, on the other hand, allow formulators to create lightweight, transparent sunscreens with superior cosmetic elegance while delivering outstanding broad-spectrum UVA and UVB protection thanks to their excellent photostability.

Why Are Modern UV Filters Sometimes Poorly Rated?

This is one of the biggest paradoxes in modern sun protection. Some of the most advanced and effective UV filters available today may receive mediocre ratings on certain cosmetic analysis apps, even though they are widely used in sunscreens recommended by dermatologists worldwide.

The explanation is straightforward. Consumer rating systems generally assess ingredients individually. European health authorities, however, evaluate the actual safety of the finished product, taking into account approved concentrations, toxicological data, long-term scientific evidence, and the overall benefit-risk balance under normal conditions of use.

In other words, a UV filter may be considered "controversial" by a consumer app while being fully authorized by European regulators and playing a crucial role in delivering high-performance sun protection.

The Real Risk Isn't a Low Rating—It's Poor Sun Protection

For your skin, the greatest danger is not using a sunscreen that contains approved modern UV filters. The real risk is being insufficiently protected from ultraviolet radiation.

Every year, dermatologists remind us that UV exposure is one of the primary causes of photoaging, wrinkles, pigmentation disorders, loss of skin firmness, numerous forms of skin damage, and is a major contributing factor in the development of skin cancer.

For individuals with Black, brown, or darker skin tones, the concern is slightly different but equally important. UVA rays play a significant role in triggering post-inflammatory hyperpigmentation (PIH), melasma, and persistent dark spots that are often difficult to treat.

How to Choose the Right Sunscreen in 2026

Instead of focusing exclusively on a cosmetic app score, dermatologists recommend evaluating your sunscreen according to several objective performance criteria. This comprehensive approach provides a much better indication of how well a product will actually protect your skin.

Why SUN'OYA® SPF50 Sunscreen Fluid Meets the Real Standards of Excellent Sun Protection

At IN'OYA Laboratory, developing a sunscreen has never been about achieving the highest score on a cosmetic rating app. The goal is far more ambitious: creating a high-performance sunscreen that delivers outstanding UV protection while providing such a pleasant user experience that people genuinely enjoy wearing it every single day.

This philosophy is based on a simple observation: even the world's best sunscreen cannot protect your skin if it stays forgotten in a drawer. Heavy textures, greasy finishes, sticky sensations, or visible white residue often lead people to apply too little product—or to stop using sunscreen altogether.

That is why SUN'OYA® SPF50 Sunscreen Fluid was specifically formulated to combine dermatological performance, exceptional cosmetic elegance, and the unique needs of pigmented skin, which has historically been overlooked by many traditional sunscreen formulations.

A Formula That Goes Beyond UV Protection

Modern sunscreens do much more than simply filter ultraviolet radiation. Today's best formulations combine advanced UV filters with carefully selected skincare ingredients that help support the skin against oxidative stress and environmental aggressors caused by sun exposure.

SUN'OYA® SPF50 Sunscreen Fluid incorporates several carefully chosen active ingredients that complement UV protection while improving hydration, comfort, and the overall appearance of the skin.

The Most Common Mistakes People Make When Choosing a Sunscreen

Beyond cosmetic app ratings, consumers frequently make several mistakes when selecting a sunscreen. These common misconceptions can easily lead to choosing a product that provides less protection—or one that simply won't be used consistently.

Frequently Asked Questions About Yuka, SPF50 Sunscreens, and UV Filters

Conclusion: Don't Let an App Rating Decide Your Skin's Future

Cosmetic rating apps can be valuable educational tools, but they should never become the sole deciding factor when choosing a sunscreen. A sunscreen is fundamentally a preventive healthcare product whose effectiveness depends on years of scientific research, rigorous regulatory testing, advanced formulation expertise, and validated UV protection standards.

Instead of focusing exclusively on a numerical score, ask the questions that truly matter. Does the product provide strong UVA protection? Are its UV filters highly photostable? Will the texture encourage you to apply it generously every morning? Is the formulation appropriate for your skin type and your pigmentation concerns?

That philosophy is exactly what guided the development of SUN'OYA® SPF50 Sunscreen Fluid. By combining next-generation photostable UV filters, very high UVA and UVB protection, an ultra-light invisible texture, and a formula specifically created for Black, brown, and darker skin tones, it delivers the level of protection modern consumers expect from a premium daily sunscreen.

Scientific References

• European Commission – Recommendation 2006/647/EC on the efficacy of sunscreen products.
• Scientific Committee on Consumer Safety (SCCS) – Scientific Opinions on UV Filters Authorized for Cosmetic Products.
• ANSES (French Agency for Food, Environmental and Occupational Health & Safety) – Ultraviolet Radiation Exposure and Risk Prevention.
• World Health Organization (WHO) – Ultraviolet Radiation and Health.
• American Academy of Dermatology – Sunscreen Recommendations.
• British Association of Dermatologists – Sun Protection Guidelines.
• International Commission on Illumination (CIE) – Standards for Measuring UVA Protection.
• Diffey B.L. Sunscreens and UVA Protection. Journal of Cosmetic Dermatology.
• D'Orazio J. et al. UV Radiation and the Skin. International Journal of Molecular Sciences.