Acqua della Regina Liquid Soap by Santa Maria Novella: A Touch of History and Freshness Product Description and Ingredients Acqua della Regina Liquid Soap by Officina Profumo-Farmaceutica di Santa Maria Novella is a hand cleansing product that combines the traditional fragrance of Acqua della Regina with a delicate and effective formula. This liquid soap is made with selected ingredients to ensure gentle cleansing, keeping the skin soft and hydrated.