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Doppelherz Silica + Biotin + Zinc - Biotin as a contribution to the maintenance of normal skin and hair - 40 tablets 40 pieces (pack of 1) sold2026 " our superior product strengthDoppelherz silica + biotin + zinc biotin as a contribution to the maintenance of normal skin and hair 40 tablets Product description Zinc makes a valuable contribution to the maintenance of normal skin as well as normal hair and nails . In addition to silica, calcium and magnesium, Doppelherz tablets also contain biotin, which supports the maintenance of normal skin. Biotin, in combination with zinc, also contributes to the maintenance of normal hair,