UVB (Burning) rays are reponsible for sunburn.
UVA (Aging) rays directly contribute to skin aging.
New research demonstrates that long UVA rays penetrate deeper. They are the major culprit to pre-mature skin aging, such as dullness, fine lines and dark spots.
Kiehl’s Sun Filter System offers triple UV defense sun protection,formulated with a new and unique blend of Sunscreen Filters that includes Mexoryl SX™ and Mexoryl XL™ sun filters to protect against UVB, short UVA, and now enhances coverage in the long UVA range.
Helps soothe and calms skin irritation caused by sun exposure!
Has skin conditioning benefits and ability to help protect skin from free radical damage.