Moroccan 'Blue Indigo' SoapProduct Details Ingredients Moroccan bleu indigo Shea Butter Moroccan bleu indigo The benefits of blue indigo to promote skin health are a matter of concern to many women, as it stimulates collagen production, which in turn works to protect the skin from damage and the appearance of wrinkles, especially for those over the age of twenty. In addition, it is one of the natural plants used to lighten the skin and unify its color.