How to define global style for "UserControl:BitmapEffect DropShadowBitmapEffect"

I am new to WPF. I have created a user control and using it at multiple places like this

Code:

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        <myControls:MyTitleBar>
            <UserControl.BitmapEffect>
                <DropShadowBitmapEffect Color="Black" Direction="180" Softness="0.25" ShadowDepth="1" Opacity="0.5" />
            </UserControl.BitmapEffect>
        </myControls:EQTitleBar>

---

I want to know if there is any way to define this at one place and use it at multiple places, so that when I want to change the parameters - I only need to change it at one place.