Syncretic 3D writes:
Ever wanted to add noise to a texture? In this short five minute tutorial I will show you how. You may already be familiar with a Mix RGB setup popularized by Ducky 3D which allows you to transform a texture with another. However there are a few issues with consistency when trying to scale the texture. it also offsets the texture a bit when changing the influence. In this tutorial, these often unexplored issues will be addressed.
https://www.youtube.com/watch?v=jmuDupH-ASo