Let's start by assigning a V-Ray Fast SSS2 material to the bottle. We'll rename it to "Bottle_Mtl" for ease of use. First, we want the bottle to be translucent, so let's see how to get this effect. The Single Scatter parameter can be changed to get different looks out of the material. Change the mode to Raytraced (refractive) - this introduces refractive properties to the material. Next, set the Color mode to Scatter coefficient + fog color. This mode is designed for translucent or refractive materials. For the proper work of this Color mode we need to set the correct Scatter radius values. For the bottle in this scene, . Another important thing for the accuracy of the material is to set the right IOR. The Index of Refraction stands for how the material refracts the transmitted light. Air has IOR of 1 by definition, which means it is no obstacle for light transmission. Cosmetics plastic bottles are commonly made of PET, so we use PET's IOR here, which is 1.575. Feel free to experiment with different plastic IOR values to get the desired look. We are ready to do one test render and see how the bottle looks. |