Any fast instant beauty treatments. At the minute people are cutting back on the luxury end but still demand instant result treatments whether those be regular clients or one offs for weddings, proms, photo shoots, wedding and hen dos etc.
Try extreme waxing if you dont already, lashes (all the rage at the minute) I just do the normal small individual lashes not the single ones but I charge £20 a set and do quite a lot. I hate fiddly things so refer my clients to therapists who do the single lash extensions so if you can do that ask other salons to refer clients to you for a fee per client they send to you.
Also nails, 3d nail art and make up.
Anything that makes clients look and feel good in this credit crunch!
xxx