- **Transmission** Indicates whether HDRP simulates the translucency of the material using a thickness map. Configure subsurface scattering and transmission settings using a [Diffusion Profile](../../../Diffusion-Profile.md). For more information, see documentation on [Subsurface Scattering](../../../Subsurface-Scattering.md).
This property only appears when you select **Subsurface Scattering** from the **Material Type** drop-down.