Primarily composed of water, cucumber is refreshing and hydrating. The skin of a cucumber contains vitamin A, C and folate. It is also high in minerals including silica, potassium, magnesium and molybdenum. Silica is a trace mineral that contributes to the strength of connective tissue. Cucumbers neutralize acidity and promotes healthy hair, skin and nails.Its high water concentration helps with hydration and detoxification.