Physical sunscreens provide a ‘shield’ against UV rays. By using minerals that naturally block UVA and UVB rays, physical sunscreens deflect the sun’s rays.
By deflecting UV rays, as opposed to absorbing them like chemical sunscreens, physical sunscreen helps protect sensitive skin from heat-triggered irritations, like rosacea.
Zinc oxide and titanium dioxide (the two major components of most physical sunscreen) have also been shown to be drastically less harsh for those with sensitive skin.
Physical sunscreen is fast-acting; your skin is ready for the sun the moment it’s applied.