I'm tyring to apply a feather to a path, but I only one it applied on one area of the path.

I tried using the *Direct Selection Tool* (`A`) to select the anchors I wanted it applied around, that didn't help.

Is there a way to apply a feather (**Effects → Stylize → Feather**) to only one part of a path?

---

This is just an example, not the actual paths I'm using

I want the area in the dashed red line, to gradually fade in (using a feather was my initial thought)

[![image mockup](https://i.stack.imgur.com/XO05m.png)](https://i.stack.imgur.com/XO05m.png)