The SPF filter system in City SUN and City SUN BODY is based on four chemical compounds. This provides the skin with very high and high protection from the sun’s rays and blue light.
UVA radiation
UVA waves are always equally strong, regardless of the season and weather. This is one of the reasons why year-round photoprotection is a must. This type of radiation is responsible for photoaging. It produces an instant tan, does not cause a burn, but penetrates deep into the skin. It can be very damaging to cellular DNA.
UVB radiation
UVB waves provide a more permanent delayed tan. They enable the production of vitamin D, but can also cause epidermal burns and inflammation. They cause damage to skin cells.
Blue Light
Blue Light radiation is emitted by LED screens – such as those in smartphones, computers and tablets. Waves of blue light penetrate the skin more deeply than UV radiation. They generate as many free radicals as the combined UVA and UVB waves. Blue light radiation shortens the lifespan and proliferation of fibroblasts, reducing skin firmness. It weakens the epidermal barrier and causes post-inflammatory hyperpigmentation. It can cause DNA damage and premature skin aging.
Photoprotection with City SUN BODY milk and City SUN sunscreen is protection against the harmful effects of all three types of radiation: UVA, UVB and Blue Light.