aggressive claybar on glass

this question has always bothered me.

is it safe to use an aggressive claybar on glass? ive always wondered if there was a slight risk of creating fine scratches, although glass is much harder than paint.

It seems like it should be safe, but you never know...

 

Perfectly safe.

 

Glass is harder to scratch than paint so aggressive clay works, sometimes have used it with hard water spots before I polish the glass.

 

I use ClayMagic Red on glass all the time. No issues.

 

Yup... aggressive clay really makes the work go quick...

 

It's pretty hard to scratch glass with clay. I've clayed quite aggressively before on my own glass with no issues at all.