It can be used by anyone, at any age with or without disabilities. The absorbing material also means it can be used both in summer and in winter.
Its aim is not only to absorve salive, but also to fight the stigma related to social exclusion due to hypersalivation and reflux.
Joana is also the founder and president of BIPP - Banco de Informação de Pais para Pais (an association for parents of special needs children).
More info: http://2013.ideiasdeorigemportuguesa.org/ideias/154