Some things you should check before getting any piercing.

Do they use a gun for an ear lobe piercing?
If the answer is yes, then this company does not have your best interests at heart. Find a new Studio

Do they have a problem showing that the instruments and jewellery are sterile?
This is the only way that you know you are safe. Check that the needle is in the manufacturer's unopened original package. If you pick jewellery out of a cabinet, it will take some time to sterilise. Check that it is in some sterile packaging or container, if the jewellery is not shown to you in sterile packaging of some sort at the time of the piercing, do not have it implanted into your body. Walk out and find a reputable piercer.

What healing do they suggest?
Nothing in this world comes easy and piercing your body and growing some skin where it had never existed before, can be one of the harder things to do depending on the piercing. There is nothing anyone can give you to make your body heal faster. All we can do is eat healthily and make sure that we give our piercing the cleanest environment possible and it will heal it's self. Alcohol and chemical based products are too harsh and not appropriate healing suggestions. If only it was as easy as a magic spray.

Do they back the piercing?
Check if they will help you heal your piercing if you have any problems , not just for a month. Most piercings aren't healed by 4 weeks.