Hiya Tracy,
I never do special offers , ever. There's no need , just offer what you do and show them what you are about and those that want a quality environment will get just that.
If you do opening offers it can get hard to charge the proper price after that. Some clients may expect you then on to have constant specials if you know what i mean.
However, putting together a pacckage of 2 or more treatments etc may be a good idea to sell more services whilst they are with you.
Eye special , brow wax, tint eyelash/brow for a combined price.
Facial with hand or foot massage whilst the face masque is on - add on or offer free in your introductory weeks.
Wax special ie; half leg, bikini, underarm, lip, brow for say 10% cheaper. I do this for my very long standing clients.
Those offers I have mentioned are something that you would be able to keep going and not lose out on.
Some salons do an introduce a friend scheme. I don't (too tight me lol) but as you need to get your business off the ground as soon as , maybe give a £5 voucher to the recommended client as an incentive. Limit how long you will do it for in case your client retention is almost 100% like mine is.
When are you opening? i bet you can't wait!
RosieR x