took the girls for their usual cuts and now Nala is looking quite red around her rear and she is dragging her bum.
She's been shaved round her rear and all of her tail area.
anything I can put on her to help it?

I tend to use the Vetzyme veterinary antibacterial powder.  It soothes and helps stop irritation.  I don't ever use creams because they tend to make any problem area 'wet' and that encourages bacteria and increases infection, whereas the powder keeps any problem area dry.