- What is the difference between UVA and UVB rays?
Ultraviolet (UV) rays are invisible rays emitted by the sun that can penetrate the skin. The name of the UV rays depends on their wavelength.
On average, UV rays consist of 90% UVA and 10% UVB rays:
- UVA rays (reminder: UVA = Age) are the longest and most dangerous rays. They are largely responsible for skin ageing and can even be carcinogenic in the event of overexposure.
- UVB rays (reminder: UVB = Burn) are the rays responsible for tanning but also for sunburn.
Good sun protection must protect against these two types of radiation: this is what is known as "broad-spectrum" (UVA + UVB) sun protection.
- What is an SPF?
SPF means Sun Protection Factor: this index offers a degree of anti-redness (anti-UVB) protection measured in skin reaction time. For example, an SPF of 15 means that it takes 15 times as long for redness to appear on skin with the cream as opposed to without the cream.
- What is the difference between chemical filters and mineral filters?
Mineral filters are blends of very small particles that reflect UV rays on the skin's surface, just like a mirror would. They are safe for nature because they are natural. However, they are very difficult to spread and can leave a white finish on the skin. Some may also contain nanoparticles with undesirable effects.
Chemical filters are chemical molecules that absorb UV rays instead of the skin. They provide the most effective protection against UVB and UVA rays. The term "chemical" has nothing negative or dangerous about it, but some filters are controversial: irritant filters (octocrylene), suspected endocrine disruptors (Octinoxate or Ethylhexyl methoxycinnamate), or those that are dangerous for the environment (oxybenzone, octinoxate).
We have chosen to use certain chemical filters that are safe for your skin, yet also environmentally friendly.
All our filters are authorised by the European health authorities (COLIPA standard).
- What is a nanoparticle?
Nanoparticles are particles with a diameter size of less than 100 nanometres. They are frequently used in sun creams on the market to make the textures more fluid without leaving a white finish. They can be easily identified in the ingredients list by the annotation [nano] before the name of the filter.
Nanoparticles are controversial because they are suspected of being endocrine disruptors and of having toxic effects.
The absence of filters with nanoparticles is a guarantee of safety.
- Do our formulas contain nanoparticles?
None of our 2019 sun care formulas contain filters in the form of nanoparticles.
- Which filters have we used in our sun care range?
We have created innovative SPF protection with four chemical sun filters, each used in its optimal dose, to offer you UVA and UVB protection with a minimum of filters, as well as guaranteeing you an invisible finish.
We have ruled out all filters that are allergenic, endocrine disruptors or dangerous for the environment.
We have used the following four filters, which are safe for the skin and nature:
Butyl methoxydibenzoylmethane, Ethylhexyl triazone, Isoamyl methoxycinnamate, Bis-ethylhexyloxyphenol methoxyphenyl triazine.
A few points of reference:
- EWG Skin Deep ranks these filters highly: 2 for the first and 1 for the three others (1: good, 10: very bad).
- The consumer association "Que choisir" does not indicate any risks associated with these four filters.
- Yuka classifies these filters as "low risk" (we cannot yet scan isoamyl methoxycinnamate because it is not used by enough of our competitor brands).