Biotin, also known as vitamin H (£4.69, hollandandbarrett.com) can do the trick, as can Perfectil Plus Nails (£14.95, vitabiotics.com) while zinc tablets (£3.09, Boots) will help prevent white ...

Vitabiotics No.1 beauty supplement brand, Perfectil, contains ingredients such as biotin, zinc and selenium which contribute to the maintenance of normal hair, skin and nails. All Vitabiotics ...