---
title: "Using Material Layers"
canonical: "https://rmanwiki-25.pixar.com/space/RFH25/22642763/Using%20Material%20Layers"
format: markdown
---
![image](media://ab2a24a7-07a5-412c-a054-2eac22e4b284)

  


You can find out all the details of PxrSurface and its layerable parameters by visiting the [Pixar Surface Materials](https://renderman.atlassian.net/wiki/display/REN25/Pixar+Surface+Materials).


  


### PxrLayer

We can override the parameters in [PxrSurface](https://renderman.atlassian.net/wiki/display/REN25/PxrSurface) using the [PxrLayer](https://renderman.atlassian.net/wiki/display/REN25/PxrLayer) options. 

In this example, we set a green diffuse color in PxrSurface. Then we layer a PxrLayer node on top that has a cyan diffuse color. Note that one color covers the other, so we need to alter the Mixer node.

### PxrLayer Mixer


We can layer specular, iridescence, and other illumination lobes.  


![diffuselayerrender.png](media://70a5c464-cbb1-4b61-bd36-50f27039f4f5)