Sunscreen: what ingredients should I avoid?
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Sun protection is essential for maintaining healthy skin, preventing skin ageing and reducing the risk of cancer. However, not all sunscreens are created equal. Some ingredients can be irritating, comedogenic or potentially harmful to the environment. Knowing which substances to avoid is crucial to choosing safe, effective protection. This article explores the main problematic ingredients in sunscreens and provides advice on selecting the right product for your skin type and needs.
1. Controversial chemical filters
Many sunscreens contain chemical filters that absorb UV rays. Some of these are now being criticized for their irritant or allergenic potential. Filters such asoxybenzone,octinoxate andavobenzone can cause skin reactions, especially in sensitive or acne-prone skin.
Oxybenzone, in particular, is also suspected of being an endocrine disruptor, although studies on humans remain limited. For sensitive skin, we recommend mineral filters such aszinc oxide or titanium dioxide, which are less irritating and offer immediate protection against UVA and UVB rays.
2. Comedogenic agents
Some sunscreens contain substances that can clog pores and promote the appearance of closed comedones and blackheads, especially in combination or oily skin. Ingredients such as lanolin, heavy mineral oils or certain forms of silicone can contribute to clogged pores.
To limit this risk, we recommend choosing non-comedogenic, lightweight products adapted to oily areas, especially the T-zone. Water-based formulations or fluid gels are generally better tolerated by blemish-prone skin.
3. Irritating fragrances and preservatives
Synthetic fragrances and certain preservatives found in sunscreens can cause irritation, redness or allergic reactions, especially on sensitive skin. Substances to watch out for include synthetic fragrances, parabens and alcohol denat, which can weaken the skin barrier and accentuate sensitivity.
For safe, gentle sun protection, we recommend fragrance-free creams with mild preservatives or those certified for sensitive skin. Hypoallergenic formulations are particularly suitable for reactive skin or skin prone to rosacea.
4. Sun filters and the environment
Some chemical filters, such asoxybenzone andoctinoxate, are not only problematic for the skin, but also for the environment. They can damage coral and affect marine life when released into the water during swimming. For environmentally-friendly sun protection, we recommend mineral filters and reef-safe formulations, free from oxybenzone and octinoxate.
Choosing a product that is effective, tolerated by the skin and respectful of the environment allows you to protect your skin while reducing your ecological impact.
5. Tips for choosing the right sun cream
To select the right sun cream, it's essential to check its composition and give priority to certain criteria. Mineral filters such aszinc oxide and titanium dioxide are recommended for their skin tolerance and immediate effectiveness. Non-comedogenic, fragrance-free and hypoallergenic products are suitable for sensitive, combination or acne-prone skin.
It's also important to choose a sun protection factor (SPF) suited to your skin type and intended exposure. An SPF of 30 to 50 is generally recommended for daily use, while higher SPFs are recommended for prolonged exposure to the sun or at altitude. Last but not least, water-resistant formulations ensure long-lasting protection for outdoor activities.
6. Conclusion
Choosing an effective sunscreen goes beyond the SPF indicated on the tube. It's crucial to pay attention to ingredients to avoid, such as certain irritating chemical filters, comedogenic agents and harsh preservatives or fragrances. Mineral filters, hypoallergenic and non-comedogenic formulations offer skin-safe and environmentally-friendly protection.
Adopting the right sun care routine not only helps prevent sunburn and skin aging, but also preserves the skin's overall health, especially for sensitive or blemish-prone skin. By paying careful attention to ingredients, it's possible to combine effectiveness, tolerance and ecological respect.