Elnett Hair Spray Strong? Hold is a long-lasting, extra strong hold brushable hair spray with a clean and soft finish; Never stiff or crunchy, Elnett holds curls and resists humidity all day long. Strong Hold Hair Spray is humidity-resistant, long-lasting and firm hair sprays for women and men locks hairstyles that go for hours without leaving hair hard. It disappears with the stroke of a brush. It gives hold and a natural-looking shine which Protects your style against the effects of humidity and gives up to 24Hr stronghold.