Zinc Oxide Uva And Uvb Protection

We make our sunscreen solution as easy to apply as possible providing a simple to use brush formula that can be applied and reapplied over your makeup throughout the day.

Zinc oxide uva and uvb protection.

Short wavelength solar rays of 290 320 nm mostly absorbed by the ozone layer. This problem has been partly addressed by the advent of zinc oxide nanoparticles as a sunscreen agent one popular brand is z cote. Although many of the available ingredients filter uvb rays effectively fewer cover the uva spectrum. Uvb rays have different strengths depending on sun s location and can be reduced by clouds.

Even some products labeled broad spectrum uva uvb protection have not always provided good protection against uva rays. Zinc oxide has been found to offer protection against broad spectrum ultraviolet rays uva uvb which is not always the case with chemical sunscreens that only block one type of uv light. Zinc oxide provides broad spectrum uva and uvb protection while the inclusion of titanium dioxide ensures the formula is lightweight and adept at minimizing excess oil. To achieve high spf values american sunscreen manufacturers must add uvb filters which drive up the spf value but result in a poor balance between uva and uvb protection.

Only two sunscreen active ingredients approved in the us avobenzone butylmethoxydibenzoylmethane and zinc oxide zno provide true broad spectrum protection against uva wavelengths 360 nm. The active ingredient in badger sunscreens the mineral zinc oxide offers excellent uva protection. In fact the concentrations of ordinary forms zinc oxide required for high degree of protection against the full range of uva and uvb inevitably produce some whitish tint. Only zinc oxide and avobenzone protect against shorter and longer uva rays.