The invention relates to a composition comprising 5 to 100 wt.% of a structured aqueous phase wherein the composition contains 0.1 to 10 wt.% sericin by weight of water, said sericin having a proportion of beta-sheet in the secondary structure that exceeds 80%. It was found that sericin having a proportion of beta-sheet in the secondary structure that exceeds 80% is an excellent water structurant and can suitably be used to structure the aqueous phase of a wide range of products, such as cosmetic products, pharmaceutical products, food products and detergent compositions.
