Over the past decade the need for improved UVA protection was increasing fast.
UV radiation has adverse effects, including sunburn, photo-aging and skin cancer. These effects can only be prevented by protecting against the whole range of UV radiation, including UVA.
On the other hand there is also a trend to limit the amount of “chemicals” on the skin. This means that very efficient UV absorbers should be available for the new requirement of broad UV protection. Sunsafe-BMTZ（Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine has been designed to fulfill this requirement. It is photo-stable, oil-soluble, very efficient and covers the UVB and UVA range. In the year 2000, European authorities added Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine to the positive list of cosmetic UV absorbers.
• UVA: Two ortho-OH groups are required for efficient energy dissipation via intramolecular hydrogen bridges. In order to obtain strong absorption in the UVA, the para-positions of the two respective phenyl moieties should be substituted by O-alkyl, resulting in a bis-resorcinyl triazine chromophor.
• UVB: The remaining phenyl group attached to the triazine leads to UVB absorption. It can be demonstrated that maximal “full spectrum” performance is achieved with O-alkyl located in the para-position. Without solubilizing substituents, HPTs are nearly insoluble in cosmetic oils. They exhibit the typical properties of pigments (e.g., high melting points). In order to increase solubility in oil phases, the structure of the UV filter has been modified accordingly.
Benefits:
Broad-spectrum sun protection
Highly comparable with other UV filters
Formula stability
Post time: Feb-18-2022