Commonly called ‘Nylon’. There are many types both in colour of strand and diameter. Nylon has some unique characteristics in that its retention, snap and spring are all superb. Although in watercolour will not hold the same amount of liquid as natural hair. The development of Nylon continues to improve, with processors striving to match for example Sable hair. Arguably some artists prefer Nylon as an excellent substitute for Sable and other natural hair. Versatile and hard wearing, suitable for watercolour, oil and acrylic, glass, silk etc.