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Minerals and anti-oxidants combat free radicals and help retain the youthfulness of skin.
Proteins and biotin are required for healthy hair and nails. It is interesting to note that water, vegetables and fruits like watermelon, walnuts, olive oil (an antioxidant), fish like salmon and mackerel (which contain omega 3 fatty acid) are moisturisers for the skin.
Colourful berries like strawberries, blueberries, raspberries, plus oranges and carrots (which contain betacarotene) act as antioxidants and protect from the sun.