While you can continue to follow your usual skin routine ahead of your spa facial visit, you should avoid exfoliating masks and scrubs several days before your facial to prevent the risk of raw, or otherwise uncomfortable, skin caused by over-treatment.
You should try to arrive for your SPA facials makeup-free. While the therapist may be happy to remove makeup for you, this extra step will need to be completed within your overall treatment time. Be sure to arrive promptly too, to get the very most from your appointment.