the use of the system default 'hair' layer is necessary for many people's appearance, and often misunderstood entirely as being what defines the shape of the eyebrows at all.

You can spend time in appearance mode trying to edit your shape and your eyebrow/hair layer is what is resisting the look you are trying to achieve.

Many people use such outdated layers that they never actually know what it is doing to their face at all, because it is not in the actual shape settings and it should be its own tab in that area next to eyes.

Other than Philip it is rare to see anyone actually using the Hair layer as hair, most have to go through the hassle of hiding it, because it is also one of those locked in layers you cannot just remove and it should be possible to do so. In 2025 we should not have to have one on for certain shape areas (eyebrows) and to have to alpha it out so it does not poke through our mesh hair etc.