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Sun filters: their origins, their benefits and their differences?

SeventyOne Percent deciphers this essential subject for you to allow you to approach sun protection with complete confidence.

Two categories of filters protect against UV and are authorized by regulations. Organic filters and mineral filters . Their mode of action is different:

  • Organic filters are aromatic compounds (a planar cyclic structure; these substances are called aromatics because they exhibit a strong odor) that help absorb UV energy , which is then dissipated as heat .
  • Mineral filters are opaque particles that primarily absorb UV photons that reach the skin, and then reflect and diffuse them.

The light or covering white effect is essential with mineral filters, it is the very action of natural filters to create UV barriers.

Organic and mineral filters - SeventyOne Percent

Beware of preconceived ideas : mineral filters are good for the skin and the environment, while organic filters are bad for health and the environment.

This preconceived idea is due to the belief that what is of natural origin is good for your health. However, the greatest poisons come from nature (arsenic, cyanide, etc.). It's easy to conceive of it by thinking that you can't pick and eat just any mushroom found in the woods, no matter how natural and organic! Solar filters are no exception to this evidence and a thorough ecotoxicological analysis must be carried out on each solar filter.

Considering the use of a substance as environmentally safe is based on two fundamental aspects: the intrinsic hazard profile of the substance and the exposure of aquatic organisms to this hazard. Analysis has clearly revealed that there are members of organic and mineral UV filters that are hazardous to the environment and are classified and labeled as toxic to the aquatic environment according to GHS regulations. The analysis of the ecotoxicity of mineral filters is all the more important because historically, mineral agents were unacceptable from a cosmetic point of view because they gave the skin a white appearance.

Since the early 1990s, titanium dioxide and zinc oxide have therefore been micronized and nanomized in order to obtain a cosmetically acceptable appearance. Nanoparticles are currently part of a plan to improve knowledge of the health risks linked to their use of the fourth national environmental health plan (2021-2025) co-led by the Ministries of Ecological Transition and Health. There are no clear conclusions today but many brands like us use the precautionary principle and formulate without NANO .

By revealing the subtleties of sun filters, we can help you choose the right sun protection . Beyond preconceived ideas, our commitment to your health and the environment is reflected in a rigorous analysis of the filters used in our products.

Thank you for your trust.


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