Doppelherz Aktiv formula for hair and nails + Zinc, 30 capsules, is a nutritional supplement that provides a vital supply of essential substances for maintaining the beauty and health of hair and nails. Combining the vitamins and minerals necessary for proper care, this product helps stimulate hair growth and strengthen nails. With a high zinc content, known for its role in strengthening the hair structure, Doppelherz capsules are the ideal choice for promoting healthy and shiny nails