Exposure to the environment plays an integral role in skin aging. It is estimated that 80% of the signs of aging seen on the skin is a result of long-term sun exposure.
UV filters will reflect or absorb UVA and/or UVB radiation from the sun. This protects the skin from sunburn, but also from destruction of the skin barrier, inflammation, collagen degradation, and uneven skin tone (hyperpigmentation). UV filters are essential ingredients in every skincare regime.
UV filters reflect or absorb UV radiation to provide protection from the sun.
Sunlight contains both UVA and UVB radiation. UVA radiation (320-360nm) penetrates the skin deeper than UVB radiation (290-320nm) and causes premature aging (via collagen destruction). However, UVB radiation is responsible for sunburn. Altogether, exposure to UV radiation causes damage to DNA, impairment of the skin barrier, dehydration, suppression of the immune system, and skin aging.
It is estimated that 80% of the signs of aging seen on the skin, come from long-term exposure to UV radiation.¹ In addition, some cosmeceutical active ingredients can make the skin more sensitive to the sun. Therefore, it is essential that all skincare regimes contain broad-spectrum daily sunscreen with UV filters.
UV filters can be categorised as organic (chemical) or inorganic (mineral). Organic filters will absorb UV radiation, while inorganic filters will reflect or scatter UV radiation. UV filters can protect against UVA radiation, UVB radiation, or both.² In skincare formulation, is it essential to combine UV filters to provide protection against UVA and UVB radiation (broad spectrum sunscreens) as this will protect from burning and aging.
1. Flament F, Bazin R, Rubert, Simonpietri, Piot B, Laquieze. Effect of the Sun on Visible Clinical Signs of Aging in Caucasian Skin. Clinical, Cosmetic and Investigational Dermatology. 2013;221.
2. Draelos Z. Active Agents in Common Skin Care Products. Plastic and Reconstructive Surgery. 2010;125(2):719-724.
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