The Daler Rowney FW Ink Neon Set includes six acrylic-based inks in neon colors. These bold, vibrant colors can be used with acrylic brushes or technical pens. They can also be diluted to create lighter tones and washes. FW Ink dries to a water-resistant film that is both lightfast, permanent. Neon FW Inks can be intermixed with conventional acrylic colors, however this will reduce the vibrancy of the neon colors.