Wellbeing Range - Advanced Nutrition Programme Nail Science is a specially formulated supplement designed to aid the strength and condition of your nails. Nails are often weak, brittle or flaky due to nutritional deficiencies, simply increasing the intake of one element will not make your nails healthy. These capsules contain a well balanced combination of natural ingredients biotin, calcium, horsetail and specially selected vitamins and minerals, all nutrients that have been shown to benefit nails. Directions for use: Take two capsules daily with food.