Do I need to use this every day, all year round?

At Laboratoires de Biarritz, we advocate for a reasonable approach to sun protection, not marketing-driven rules of thumb.

That means a very high protection factor isn't necessarily needed every day, especially when your sun exposure is minimal. That said, if dark spots are a concern for you, it's important to adapt your protection accordingly:

On days with significant exposure (outdoor activities, commuting, strong light…), SPF50+ is essential to prevent new spots from forming and existing ones from coming back.
In these situations, reapplication is key: a morning-only application won't provide full protection several hours later. We recommend reapplying every 2 hours during prolonged exposure.

On days with moderate exposure, the fluid can be used as part of your daily routine if you want to maintain stronger preventive action. This is more important particularly if you have established spots or pigmentation-prone skin.

The key is to match your level of protection to your actual exposure, rather than reaching for SPF50+ on autopilot every day. This approach effectively protects the skin, without adding layers it simply doesn't need.