I have to disagree with your comments. I have just tried a Mandara Spa on the Norweigian Sky, it is not a patch on the Steiner Spa that used to be on there.
The staff were lazy, messy and totally unproffessional, something I have never ever worried about Steiners. I hear Mandara doesn't even train their staff!!!!..and it shows!
The Steiner products are worth the extra if you ask me, at least they don't go off!
My therapist in the Spa had dirty nails and smealt of smoke. She told me Steiner turned her down and so she went to Mandara as they were not fussy.