Solar Authority | RATIONALE

80 per cent of Facial Ageing is Caused by the Sun

At RATIONALE, our ongoing research into the effects of solar exposure as the primary cause of facial ageing is at the heart of everything we do, earning us worldwide acclaim as an industry leader in the prevention and treatment of sun damage. 

The Essential Six daytime routine offers the world's most comprehensive protection from the complete Solar Constant—made up of ultraviolet, visible light and infrared radiation—as well as from pollution and other environmental aggressors. 

The Essential Six night routine works to repair and reverse daytime damage by replenishing the skin’s lipid barrier and reactivating vital youth enzymes. DNA repair processes are initiated to reinforce overnight regeneration. 

RATIONALE’s revolutionary Superfluid SPF formulations—delivering lightweight, skin-syncing Solar Constant protection which nourish while they protect—perfectly complement every Essential Six prescription to deliver maximum daily rejuvenation, protection—and Luminous Skin for Life.

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