You can make advertisement to attract people by mouth and by using social media.
Sometimes, the advertisement from other people's mouth is much better than ours but that only happens if you provide such people with an excellent and affordable service.
An example would be on how I was able to have clients asking for drawing portraits as a student. Well, it all started when, for the first time, I provided some of my service to my friends. And once the product is in their hands, others will eventually start asking on where they got it and for how much. Of course, if the product is known to be very expensive, you have to lower your price range for you to catch them. Like, if such known service is usually paid at a range from 3,000-5,000 pesos; you start to lower yours down which can be 2,000-3,500 pesos. Your choice.
In social media advertisement, however, you need to provide proof by uploading photos or videos, like those before and after using the product.