Transparent plastic bag texture

[Fabrice]

Hi,
another beginner question...
I want to make a used plastic bag shader.
Using a specular material.
I juste created meshe with a simple noise bump on it.
An hdri lights everything.

Problem is :
- I cant see any reflection (but it is set to 1)
- lowering the transmission turn everything to dark grey
I'm kinda lost in those parameters...
Any advice?
Thanks

[Goldisart]

+

[acc24ex]

index of reflection should be higher - like glass, 1.5.. 1.0 is non reflective, higher value is reflective - it's not like the one on glossy channel

- transmission is the like diffue color in the specular material..
- reflection is color of reflection (obvious) - so both on white
..try without the noise, or put in some texture, noise will look like water - try modeling it

[Fabrice]

Thanks both.
I tried the Paride "mix" way and it worked