Tip or no tip?

As others have said! $5-$10 depending on how much you like it is fine!

I would tip both (unless tip amount is included in day of hair). its a service they are providing. whether it be a trial or not. I tip my hairdresser every time I get my hair done. I usually do $10

I would tip but only like $5 for the trials. I would even say - "I know it's only a trial but I can't just not give you something for glamming me up".

I am just tipping on the day of, since the final bill will be paid prior to the big day

Of you’re happy with it, I say do it! Even an extra $10 is a nice gesture imo. I don’t think it has to be a lot.

It’s totally your call for trial. Generally for the day of services the tip is included as it’s such a big group, but double check. I know at the spa I work at we have a group rate for wedding day that includes gratuities and a snack plate. Trial services are a less rate but tip is at the discretion of the client. Hopefully that helps.