With the arrival of spring, good weather, longer days, and the opportunity to spend more time outdoors, there's one essential item: sunscreen. Protecting your skin from solar radiation is a matter of health. Prolonged sun exposure without protection can cause damage to the dermis and, in the long term, problems for the body in general.
In this context, choosing a good sunscreen is fundamental if we truly want to take care of our skin's health. Not all sun creams are the same, as their ingredients, formulation, and, above all, the type of sun filter they use make a big difference.
If you want to take maximum care of your skin, one of the keys is to opt for a physical or mineral sun filter. In this article, we explain what it is, how it works, how it differs from other types of filters, and why it is one of the best options for both your skin and the environment.
What is a mineral sun filter?
A mineral sun filter is a type of sun protection formulated with mineral-based substances that act by creating a barrier on the skin that reflects and scatters solar radiation. One of the ingredients often found in this type of filter is zinc oxide, which protects against UVA and UVB rays without penetrating the skin.
Unlike other types of sunscreens, physical or mineral filters (yes, they are the same) are not absorbed into the skin; instead, they act as a mirror on it, serving as a shield against radiation. This means their effect is immediate from the moment they are applied.
In the case of Banbu sunscreens, all contain mineral filters and are formulated with natural ingredients that not only protect from UV rays but also strengthen the skin barrier and prevent dehydration. This makes them the most respectful option for protecting the skin.
How does a physical sunscreen work?
The operation of a physical sun filter is simple but very effective. When you apply it to the skin, it forms a protective layer that acts like a mirror against solar radiation. Instead of absorbing UV rays, it reflects them.
Its mechanism of action leads to a lower risk of skin irritation, as it does not penetrate the skin. Therefore, these creams are suitable for all skin types. Furthermore, protection against radiation is immediate upon application.
These characteristics make mineral sun filters especially recommended for children and people with sensitive skin.

Differences between mineral and chemical sun filters
To better understand why more and more people are choosing mineral filters, it's important to compare them with chemical sun filters.
Chemical sun filters (also called organic) work by capturing energy and transforming UV radiation into heat. The skin absorbs it, thus preventing radiation. However, sun creams with this type of filter need to be applied about 20 or 30 minutes before sun exposure and can cause irritation or damage. Not all ingredients that make up physical filters are allowed in all countries, due to their health consequences and also the footprint they leave on the environment.
Mineral sun filters, as we have already mentioned, are not absorbed into the skin; instead, they reflect solar radiation and are safe and more respectful of the body. Furthermore, physical filters are more stable against solar radiation, meaning they maintain their effectiveness for longer without degrading.
How to choose a good sun cream
When choosing a sun cream, it should be comprehensive, effective, and contain a mineral sun filter. For this, it is very important to pay attention to the ingredients. All the ingredients in Banbu sunscreens are natural, making it a safe product well-tolerated by all skin types.
Furthermore, the ingredients are also environmentally friendly, whereas others, such as oxybenzone, are prohibited in some places due to the damage they cause to the environment.
Banbu's sun cream also solves a very common problem with other sunscreens: it has no white cast. Its texture is very light, so its application creates an invisible effect on the skin.
Another characteristic to look for is the SPF. If you want longer-lasting protection, it is recommended to use an SPF50, as it will protect you for a greater number of hours.
Use true sun protection: mineral sun filter
The physical sun filter has established itself as one of the best options in natural cosmetics. Thanks to its mineral composition without harmful ingredients and its immediate action, it offers effective protection without compromising skin health or the environment.
If you are looking for a safe sunscreen, especially for sensitive skin or for the whole family, opting for a physical filter is a wise decision. Sunscreen formulas have advanced significantly, offering pleasant textures and increasingly invisible finishes.
This summer, enjoy the sun responsibly. Your skin and the planet will thank you.