Free radicals are small, highly reactive molecules with an unpaired electron that form constantly in the body, for example in energy production and in fighting germs; smoking, air pollution and UV radiation can increase them. When there are too many free radicals or too few antioxidants, the state is called oxidative stress, which can damage cells over time. The body’s own antioxidants and those from food (berries, green tea, dark chocolate, vegetables, fruit, wholegrains and nuts) keep the balance; the best antioxidants come from food, not from supplement bottles. This is general information, not medical advice.

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To protect your skin from blue light, keep it moisturised, protect it from the sun, get antioxidants from food and skincare, use blue-light filters and lower your screen brightness, and take regular screen breaks. Blue light from screens and sunlight is thought to penetrate deeper skin layers, increase free radicals and affect collagen, which can leave skin dry and ageing earlier. Also stop using screens at least an hour before bedtime, because blue light disturbs the sleep hormone melatonin.

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Dry brushing is a gentle morning skin routine in which you brush dry skin with a brush or mitt in strokes towards the heart. It is said to boost circulation and lymphatic activity, remove dead skin cells, give skin a healthy glow, help prevent ingrown hairs and support the look of firmer skin. Five minutes a day is enough, and it should always be done with light, gentle strokes.

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