Is there an alternative way to blend masks besides dither temporal aa

Hi guys, I’m trying to create some hair and some glass using masked material and the only way I know to make it blend smoothly between the masked areas and unmasked areas is by connecting a dither temporal AA node between my mask and the opacity ,ask input

104469-dither.jpg

but it looks noisy and rough. And I can’t use translucent material because it doesn’t catch light.

Examples of what I am doing, please see the high res versions so you can clearly see the noise.

the glass has a lot of noise in it because I’m using dither temporal AA
This isn’t a very good shot but the hair also has noise especially when the character is moving

Assuming he used a mask, this artist managed to do it without noise on his mask, and I’m sure his not using transparent material.

Does anyone have any idea how I can mask my material without the noise that dither temporal aa produces? thanks in advance.

Did you ever solve this? I’m using 4.9.2, so I can’t take advantage of the new hair shader, and so far, everything looks super noisy with this method. Thanks.