The Vichy Capital Soleil Invisible Fluid Sun is a scientific formulation designed for sun protection utilizing a combination of active ingredients with specific mechanisms of action. This product contains the chemical filters ethylhexyl methoxycinnamate and bis-ethylhexyloxyphenol methoxyphenyl triazine, which function by absorbing and dissipating UV radiation to prevent skin damage. Ethylhexyl methoxycinnamate, also known as octyl methoxycinnamate, is a commonly used UVB filter that absorbs UV radiation in the range of 290-320 nm. It works by converting the absorbed UV energy into less harmful forms of heat, thus protecting the skin from UV-induced damage. Bis-ethylhexyloxyphenol methoxyphenyl triazine, on the other hand, is a UVA/UVB filter that provides broad-spectrum protection by absorbing a wider range of UV wavelengths. Additionally, this product contains glycerin and hyaluronic acid, which act as humectants to maintain skin hydration and prevent moisture loss. Both ingredients have high water-holding capacities and can improve the skin's barrier function, enhancing its resilience against environmental stressors. The Vichy Capital Soleil Invisible Fluid Sun has been formulated with a pH level that is compatible with the skin's natural pH, ensuring optimal skin tolerance.