Why alcohol wipe down?

[distrbd]

what I call a step by step detailing a car(paint only)is:
1)wash.
2)clay.
3)paint cleaner.
4)polish ,in my case I use SSR 2.5 then SSR 1.
5)Glaze (maybe).
6)wax /or sealant and wax.
I`ve heard some use an alcohol wipe down after polishing! I would like to know for what purpose ?
Is it necessary?I thought it was used to remove LSP but why after polishing?
Could someone explain this for me?
Thanks.
Ken.

[Troy@Protekt]

The alcohol cleans off any polish on the surface that could hide any remaining paint defects. This way you can examine your progress and determine if you need more polishing.

[JaredPointer]

To remove "fillers" from polishes (if present).

[distrbd]

That makes sense now,I thought may be it was used to remove any polish residue so the sealant would bond better ,Then I thought what if I don`t use a sealant,oh well ,now I know why.
Thanks Troy for helping a rookie.

[distrbd]

To remove "fillers" from polishes (if present).

Whatever I know about detailing (even though very little),I have learnt it here from you pros,and from what I gather ,I should avoid using any polish that has fillers (if possible),but some manufacturers don`t mention it on the labels.