Wax and in general all the organic matters have certain amount of Subsurface Scattering, allowing certain amount of light to move inside the matter, but in random paths due the constant collisions with the particles inside the medium.
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First think about the substance you want to create as a perfect clean dielectric material. In this case we'll use a pale yellow Transmittance color, Nd=1,33 and Roughness=0. Adjust the Attenuation Distance to get the amount of tint you want for your dielectric. In this case we used 4cm and got a clean yellow dielectric.
Simple dielectric yellow material. You can download this material example here.
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And as wax is a glossy material, you may need to increase the Roughness value to something around 60-70%, and you're done!
Increase the Coef value to add more particles density to the medium that produces the organic SSS result. You can download this material example here.
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Find more SSS examples at the MXM Gallery.
Find more wax examples at the MXM Gallery.
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