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Skin in the sun's rays - UVA, UVB, HEV and IR protection

Before you find out what a protective cream isLynia SunShield SPF 50+ and how it works, it is worth presenting the entire spectrum of solar radiation and its impact on the skin:

UVA radiation

Of all types of ultraviolet that reach the earth's surface, almost 95% are UVA rays. This is radiation with the longest wavelength among ultraviolet waves (320-400 nm). Therefore, its theoretical frequency is lower, but due to its intensity it still constitutes a threat that is worth remembering.

Humans are exposed to UVA radiation all year round. Upon contact with the skin, it causes an immediate tan, which is visible a short time after its occurrence, but lasts only a few hours. UVA rays do not cause sunburn, which makes them seem less dangerous, but they can damage the collagen fibers in human skin, which causes its premature aging.

Other side effects of excessive exposure to UVA may include:

  • Oxidative stress

  • damage to capillaries

  • disorders of the skin's protective barrier

  • damage to collagen and elastin fibers


UVB radiation

Another type of ultraviolet light is UVB rays. Their wavelength range is from 280 to 320 nm. They constitute only about 5% of the UV radiation reaching the earth (the rest is retained by the ozone layer in the atmosphere), but they are more aggressive in their impact on the human body.

This radiation is the source of the tan. It stimulates melanocytes present in the skin to produce melanin, a substance that absorbs part of the sun's rays and gives the skin a darker shade. Unfortunately, in addition, UVB is also responsible for the formation of erythema - i.e. redness associated with the dilation of blood vessels - as well as burns. Its impact is strongest in summer, between 10 a.m. and 3 p.m.


UVC radiation

These rays have the shortest wavelength (200-280 nm) and the highest power. However, they do not penetrate the earth's surface because they are almost entirely absorbed by the ozone layer.


HEV radiation

This radiation, called blue light, covers the range of high-energy visible light with a wavelength of 435-500 nm. They are emitted, for example, by the screens of electronic devices.

HEV radiation penetrates the skin deeper than UV radiation, generates a comparable amount of free radicals as combined UVA and UVB radiation, and its effect on the skin will be observable in the future. Why? Free oxygen radicals generate a number of reactions that are unfavorable to skin cells, including: degradation of lipids, proteins, activation of metalloproteinases.

They destroy collagen and elastin fibers, which are responsible for the proper tension and firmness of the skin. The process of their degradation results in distortion of the face oval and its sagging. It may also cause DNA damage or skin discoloration.


IR radiation

IR rays (infrared light), with a wavelength of 750-1500 nm, are relatively less harmful to the skin, provided it is properly protected.

A group particularly susceptible to this type of radiation are people with vascular skin, who should use protective creams with IR filters. Due to the spread of skin problems, this problem affects more and more people. We are currently testing SunShield cream for protection against IR radiation.


Radiation sources

The main source of natural UV radiation is the sun. These artificial ones include solariums, quartz glasses, lamps used in polymer hardening, bactericidal and mercury lamps, halogen lights, and some types of lasers.

HEV radiation also has two types according to its genesis. Natural, the source of which is the sun, and artificial, emitted by electronic devices such as monitors, tablets or smartphones.


SPF protection – broad spectrum

Especially in the summer season, store shelves are groaning under the weight of products designed to protect our body against radiation. However, not all cosmetics available on the market guarantee long-lasting and effective effects. The filters used in them do not always have a spectrum that protects against both UVA and UVB or HEV and IR radiation.

Therefore, when choosing the right protective cream, it is important to pay attention to the SPF factor (e.g. 20, 30, 50 or 50+), as well as the wavelength against which the cosmetic is to protect and the active substances that support its operation.


Such substances include antioxidants that eliminate the effects of skin exposure to sunlight and other radiation sources and prolong the protective effect of filters. Additional protection against the harmful effects of radiation will also be provided by clothing with a UPF filter and high-quality sunglasses that protect against both UV radiation and blue light. The latter are especially recommended for people who spend a lot of time in front of the monitor screen.


Free radicals, oxidative stress and antioxidants

Oxidative stress is a phenomenon involving an imbalance between the production of free radicals and the antioxidant capacity of the body. Active forms of oxygen are created during each breath a human takes. They are distinguished by an odd number of electrons, which results in them trying to obtain the missing electron from other cells of the human body - thus destroying them. However, free radicals can cause damage to protein, fat and DNA molecules, which leads to cell mutation or death.

Antioxidants have an extra electron that they give to free radicals. Thanks to this, they remove their excess and thus restore balance in the body. Oxidative stress occurs as a result of the lack of antioxidants or their passivity. The result is an excess of radicals that destabilize cells and disturb the functioning of the body. One of the causes of this phenomenon is exposure to radiation that reaches deep into our skin.

Therefore, it is worth protecting skin exposed to UV radiation and HEV also based on substances with effective antioxidant properties. Coenzyme Q10vitamin CandE and green tea extractThey are the most effective substances that support not only the operation of filters, but also slow down oxidation reactions in the body. They take part in the body's defense against bacteria and viruses and prevent the multiplication of free radicals.


When choosing a sunscreen cream, it is worth paying attention not only to the SPF protection factor, but also to the type of filters used, their protection spectrum and substances supporting their operation, i.e. antioxidants. Cream Lynia SunShield it combines all these features. Its formula was created to provide broad protection and eliminate the effects of skin exposure to the sun - also through the use of moisturizing and soothing substances with proven effects.  


New generation photostable filters

Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano). An extremely photostable organic (chemical) filter of a new generation, with a very wide range of action. It is a combination of the features of chemical and mineral filters. Due to the form of a micronized chemical filter, its action is double: it scatters and reflects sunlight (like a mineral filter) and absorbs sunlight energy (like a chemical filter).

Tris-Biphenyl Triazine (nano) is a substance that absorbs UV radiation from particulate matter. Its absorption properties and photostability make it an ideal protector in sunscreen products with high SPF. This type of filter protects against UVA, UVB and HEV radiation.

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine is an organic filter with a broad spectrum of protection. Effectively stabilizes unstable UV filters. It is also worth adding that it prevents long-term skin damage and has high efficiency with low concentration. Prevents the negative effects of excessive exposure to UVA and UVB radiation.

Ethylhexyl Triazone is an extremely effective organic (chemical) UVB filter with exceptionally high absorption. Due to the very high absorbency of the product, only small concentrations are required in protective preparations to achieve the desired SPF value. The polar nature of the molecules ensures a good relationship to the keratin in the skin, thanks to which the preparations in which Ethylhexel Triazone was used are extremely waterproof. This property is enhanced by complete insolubility in water. The UVB filter does not change even under conditions of excessive exposure to light.



Organic green tea extract. The beneficial ingredients in the extract are primarily polyphenols (17-30%), which have antioxidant, anti-inflammatory and photoprotective properties. They prevent harmful exposure to sunlight and reduce the risk of erythema. Moreover, they block the synthesis of enzymes (metalloproteinases) responsible for reducing the amount of collagen in the dermis, thereby inhibiting the aging process. However, the methylxanthines contained in the product are responsible for reducing the dilatation of blood vessels and significantly influence fat metabolism. Organic green tea extract is able to completely stop collagen degradation, which has a beneficial effect on maintaining elastic skin and a healthy appearance.

Vitamin E It is commonly considered the "elixir of youth". It is difficult to disagree with this statement, considering that it helps to inhibit cell aging processes and is also involved in supplying the body with oxygen. In addition, it accelerates the treatment of burns, smoothes and makes scars on the skin more elastic, and stops the inflow of solar radiation, protecting the protective layer of the epidermis from it, and increases its softness and elasticity.


Moisturizing substances

HydrofenceTMIt is a natural, active ingredient that moisturizes and strengthens the skin barrier. It is based on a new, hydrocolloid matrix of rice amylopectin, containing a calcium-rich fraction extracted from the Lithothamnium Calcareum algae. This complex not only moisturizes the epidermis, but also prevents excessive water loss by the body. Stimulates skin processes aimed at maintaining a high level of hydration for up to 120 hours after application. It strengthens the skin barrier and restores its ability to produce its own ceramides.


Soothing substances

DermasoothTMIt is an active substance, its ingredients include tulsi, milk thistle and the active fraction of the Enteromorpha Compressa algae. It was created to soothe and regenerate skin irritated or damaged by external factors. Thanks to the content of marine pentasaccharides (MPS), this complex protects the skin against collagen reduction and at the same time increases its synthesis. Another advantage of this serum is the reduction of redness and irritation.

D-panthenolIt penetrates very deeply into the skin, improves its hydration, firms it and additionally gives it elasticity. It soothes all types of irritations and inflammations, regenerates damaged epidermis and accelerates the wound healing process.

Lynia SunShield SPF 50+ cream has proven moisturizing and redness-reducing effects*:

The cream reduces skin redness (effect after 7 days of regular use in 100% of respondents).

Increases the level of hydration (effect after 14 days in 100% of respondents).

Regular use of the cream contributes to improving the condition of the skin and its appearance.

It has good care properties.

*result of application research

The use of protective creams outside the home (e.g. at the beach or a trip to the mountains) and their often low photostability mean that some filters may reduce the effectiveness of the preparations. For this reason, we decided on hygienic, ECOCERT-certified airless packaging, with a thick, light-proof wall, and modern and photostable filters that absorb UV radiation.

Thanks to the unique type of dosing using a pump, no light enters the packaging - unlike preparations in glass packaging or classic jars with a cap that are common on the market.

Our advice:

Very important When using SPF creams, it is important to cleanse your face properly. Hydrophilic oil and moisturizing cleansing foam will be perfect for this purpose. 

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