The therapist who does my facials uses Eve Taylor products which smell nice and leave my skin feeling good for ages (thanks estherlou) and their retail range is lovely too, have bought a moisturiser with SPF which seems AT LAST light enough for my oily skin . . .
The Eve Taylor Products are fantastic for professional and retail use. not only can you specifically design your treatment for your client you can back up the treatment with an excellent homecare regime leaving the client feeling valued and impressed with her experience with you. The training leaves you feeling enthusiastic and eager to return to the salon to put the professional treatments into practice.
I suppose it depends a) which brand you did your original beauty therapy training in (some may train in dermalogica, others in decleor ect ect) and b) your budget. Are you working mobile or in a salon? How big is your current client base and what do your local competitors use? what are you using at the moment? It's nice to choose a brand on the basis not only of preference, but also to find a niche in your local market place.
I use Priadara, as it's friendly to my budget (which is minimal), it uses natural ingredients with bio-friendly packaging, and it's a niche market as no salons in my local area uses this brand to my knowledge.