Oxidative stress is a major factor influencing skin ageing and the degradation of cosmetic products. German personal care ingredient manufacturer Cosphatec describes a tocopherol/carnosic acid blend that has been found to protect both the skin and a cosmetic formulation
Oxidative stress is a major factor influencing skin ageing and the degradation of cosmetic products. It occurs when free radicals - unstable molecules generated by UV radiation and environmental pollution, for example reactive oxygen species (ROS) - damage cells. This leads to a loss of skin elasticity which promotes fine lines and wrinkles.1
In addition, oxidative stress can cause inflammation which can lead to redness and skin irritation.2 In the long term, it contributes to premature skin ageing as the skin cells' natural ability to regenerate is impaired.
In cosmetic formulations containing oils and fats, oxidative processes can lead to the breakdown of lipid components. This manifests in the form of rancid odours and a change in colour and texture of the product. Ultimately, this shortens the shelf life and reduces the effectiveness of cosmetic products.
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