3N Brake Back contains silicone and can effectively preventing such ageing phenomenon as fading. 3N brake back- a top grade silicone-rich dressing protectant formulated to penetrate surface to1. Prevent drying, fading, cracking2. And hardening of rubber, vinyl, wood(except unpainted),leather3. And plastic surfaces. Gives a deep, luxurious, lasting4. And protective shine on many other automotive ...