I am completely biased (as the name suggests) - Moor Spa.
On a more serious note why not get in touch with skin care companies and ask for some samples to see what would suit you and your clients.
Also ask about their policies on minimum orders and whether they deal with mobile therapist.
Try to find out what support is offered too - do you get brochures, sachets, client assessment and prescription pads. You may even be able to get some free advertising. (if you don't ask you don't get).
It might also be an idea to use retail sizes or testers for mobile work as carrying large professional sizes will weigh a lot and take up a lot of space.
Regards
jo
Beauty products | Beauty Therapy | Professional Treatments | Beauty Supplies- Moorspa.co.uk