Ripen acts at different levels: - It gives the plant a strong signal that it is coming to the end of its life. The plant reacts by speeding the ripening process, in a last effort to spread its genes. - It brings to the plants all the mineral salts they need in a form easy to assimilate. - In case of a previous accumulation of nitrate or microelements, it helps metabolise these residues, which will improve the taste of the crop. - In case of a severe infestation of fungi or insects, it allows you to accelerate the natural cycle and get something out of a crop otherwise completely lost.