The first thing is the greeting. This is an important step towards professionalism: offering a refreshing glass of mineral water or tea for the client is stress-relieving.
Before starting the treatment the client gets a dress or gown. It's not just for the comfortable feeling, but to protect the client's clothes and lets the esthetician to massage your neck and shoulders easily. The client can change her clothes in a room (but sometimes it's enough to take off just the shirt if it's a facial, bra can stay, but you have to remove the strap) and the esthetician will leave the client alone. The client will get a headband or a cap to protect her hair. Few minutes later the esthetician gently knocks on the door to ask if the client is ready.
When the client is ready, the esthetician will ask her about her lifestyle, skin care routine, skin history, present skin care concerns, if she takes any medicine, if she smokes, which product she uses, how often she gets facial, etc.