rigenforte for hair-loss treatment, with biotinax, vitamins, minerals and amino-acids, useful to hair, nail and skin trophism.Rigenforte for Hair-Loss Treatment, with Biotinax, vitamins, minerals and amino-acids, useful to Hair, Nail and Skin trophism. The special prolonged release capsule contains 4 small tablets. 2 of them contain mainly sulfur amino acids and minerals and the other 2 mainly sulfur amino acids and vitamins. The release is delayed and differential, to give the body the possibility to use gradually and wholly the nutrients they contain.