The hot summer is coming. Have you made your sun protection today?
When sunlight passes through the atmosphere, light with wavelengths shorter than 290nm (the UVC band) is absorbed by the ozone layer for the most part. In natural light, ultraviolet radiation mainly includes UVA and UVB wavelengths. This part of UV light has a higher photon energy, although accounted for the least proportion, but the damage to the skin is the largest.
UVA (320-400nm) has a long wavelength and a low frequency, which is the opposite of UVB in that it has a lower photon energy, so no damage to the skin was observed for a short time. But it has a strong penetration ability, it can reach the dermis and destroy collagen. Thus causing skin flabby aging, accelerating the formation of wrinkles. UVA can promote the formation of skin melanin, and bring about skin pigment precipitation, induce or aggravate all sorts of color spot such as freckle, chloasma. A short period of time can make the skin appear tanning phenomenon, so it is also known as the suntan waveband.
Wavelength of UVB (290nm-320nm) is short, its frequency is high, and its photon energy is very strong, small dose can cause telangiectasia, produce erythema; Prolonged exposure can cause keratinization, leading to rough and wrinkled skin. Due to its wavelength is not easy to diffraction, and its penetration ability is weak, it can only penetrate the cuticle into the epidermis, the impact on the internal structure of the skin is relatively small. So UVB often caused by the surface of the sunburn, the performance is the skin redness, burning, pain, after leaving pigmentation spots. In areas such as the seaside and the plateau, the exposed skin can be sunburned in a short time on sunny days, so it is also called the sunburn section. UVB has a rapid effect on the skin and is the root of acute sunburn, so it is the main wave band to prevent ultraviolet sunburn.
Therefore, what we refer to as sun protection at present is mainly against UVA and UVB. The PA level (PFA value) on the label of sunscreen cosmetics represents the ability to protect against UVA. While SPF value represents the ability to protect against UVB. In order to have a broad-spectrum sunscreen effect, it is important to add organic compounds (chemical sunscreens) that have good UV absorption.
Our UV absorber OMNISTAB UV6139, also known as Octocrylene, is an oil-soluble UV absorber commonly used in sunscreen cosmetics. The maximum UV absorption wavelength is 308nm. It can absorb UV-B and a small amount of UV-A, and has little irritation to skin. It is A class I sunscreen approved by FDA in the United States. In the United States and European countries, it has a higher degree of recognition. China's Ministry of Health stipulates that the maximum amount of sunscreen added in cosmetics is 10%.
TDS of OMNISTAB UV6139
In addition, OMNISTAB UV6139 has good compatibility with resin, no coloring, and has the advantages of high absorption, non-toxic, non-teratogenic effect, good light&heat stability. It is also widely used in soft, hard PVC and other plastics, nitocellulose, acrylic resin polyurethane coatings as light stabilizer.
For more information about UV absorber and product information, please consult the relevant business personnel and technical team of Deltachem, or visit our official website www.deltachem.net for inquiries. Deltachem(Qingdao) Co. Ltd. is looking forward to your inquiry!
