Mineral/inorganic filters

A mineral sunscreen filter is an inorganic particle capable of protecting the skin from ultraviolet radiation. It acts mainly by reflecting and scattering part of the UV rays. It can also absorb a fraction of them.

The two main mineral filters are zinc oxide and titanium dioxide. Their effectiveness and tolerability are well documented.

Inorganic filters are often recommended for sensitive skin or reactive skin, as their mode of action limits the risk of irritation.

Yes, they can leave a whitish film on the skin. This is linked to their ability to scatter light. Modern formulations aim to minimise this effect.

Yes, particularly zinc oxide, which covers a broad spectrum of UV radiation. Titanium dioxide mainly protects against UVB and part of the UVA range.

Sunscreens for children often use mineral filters, due to their good skin tolerance. Nevertheless, it is important to recall that, although children must be protected with a sunscreen, the main priority remains not to expose them to the sun.

Yes, mineral filters act as soon as they are applied by forming a protective barrier on the surface of the skin.

This depends on the formulation of the sunscreen product. Some mineral sunscreens are designed to be water-resistant. However, reapplication is still required after swimming.

Some sun protection products contain only mineral filters. Others combine mineral and organic filters.