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I see in real world some time light pass through our ears and nose,i wanted to know how to make light pass through a mesh in blender cycles?

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You will want to use the sub surface scattering shader (SSS). or the faster and less accurate translucency shader.

Here is Suzanne with a SSS shader applied, and a very bright light behind her:

enter image description here enter image description here

The small scale causes the light to spread less far within the object. I set the radius to 1.0,0.6,0.6 to give the light the red cast.

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  • $\begingroup$ Can you share you share your .blend file i am new to blender i don't know how to add light like you did? $\endgroup$ – Hashir Sep 16 '15 at 5:27
  • $\begingroup$ @Hashir Sure, here it is: blend-exchange.giantcowfilms.com/b/510 $\endgroup$ – GiantCowFilms Sep 16 '15 at 14:35
  • $\begingroup$ Thanx buddy,i really appereciate it $\endgroup$ – Hashir Sep 17 '15 at 6:14

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