Push Marketing is any type of marketing that pushes a client through your medical spas door.
It may be a referral from a satisfied client, or possibly a business partner. It may be an article in a publication, a video interview or a promotional video you made. To put it simply, it's marketing that covers everything except ads.
Pull Marketing on the other hand is anything that "pulls" a consumer through your door. These are mainly your marketing materials such as your main website and your advertising, especially those "Specials" ads. Don't forget that these "Specials" are targeting customers that are either unfamiliar to your practice or unfamiliar with your products/services.
It's obvious that higher conversion rate is expected from Push Marketing because people already have a general idea of what you are offering. Before they arrive at your door, they already hold a positive opinion of you. That is unless there's anything unfortunate that comes along the way. These bad marketing bridges may be as simple as poor office behavior, overpricing, etc. Generally speaking, you should be able to convert over 90% of all your push consumers.
In order to increase your conversions in the Pull marketing, it is important to focus on the consumer's trust. If you own an aesthetic practice, adding high quality before/after photos (this needs permission of course!) will definitely increase the consumer's trust as well as adding testimonials to your marketing materials and website from your customers. You can do so by providing testimonials in both writing and videos to your blog, newsletters and auto-responder emails.
If you are able to have access to passers-by that are potentially customers, consider putting banners in your windows showing before/after results. This is great if you're offering aesthetic treatments. But again, make sure you have the patient's permission to use their images, especially if it's in a very public form.