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