Do you know the difference between physical (or inorganic) filters and chemical (or organic) filters.

Whatever the characteristic of sunscreen, they all perform the same function: to protect against solar radiation, to prevent cell damage and burns. We explain it to you in this month's blog.

Physical filters

Physical filters are substances of mineral origin and are not absorbed by the skin, but act to reflect light as a screen. Zinc Oxide and Titanium Dioxide are often used as ingredients in combination to ensure better extensibility, and both protect against UVA and UVB rays.

Physical filters are often of choice for people with sensitive, reactive or irritation-prone skin; they are also a choice for babies and children. Other indications may be after laser procedures, peels and scarring. Although there is a perception that the texture can become very pasty, nowadays there are techniques to ensure that the formula is light and gentle to apply.

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Organic filters

Instead of reflecting light, organic filters absorb it: they capture energy and transform it into heat. Depending on their characteristics, they absorb UVA, UVB or both, and visible radiation in some cases. These have good extensibility and their feel is very light. Although rare, there are cases where they can cause allergies or dermatitis. In many cases, photoprotectors based on organic filters are usually combined with physical filters to enhance their action.

Which one should I use?

As long as they are well accredited, both filters do their job and protect against UVA and UVB rays. To choose which one is the most suitable, we will look at the conditions mentioned above, such as history of allergies, reactive skin and age. Even so, we must take into account:

• The expiration date and that the product is in good condition.
• Apply a sufficient amount of product: two lines extended on two fingers of the hand, for the face and the neckline.
• Reapply every 2 hours and after bathing.
• Do not leave the cream in the sun for long periods of time.
• Make sure to cover all areas of the body.
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Our IOOX physical photoprotectors

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Our IOOX organic photoprotectors

Stay tuned:
Soon we will launch the new IOOX SPF 30!
Ideal for oily and acne-prone skin.

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Photo Credits. Renato Trentin

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