A slightly extreme beauty treatment in Indonesia

In Indonesia, some beauticians use rather unusual techniques. One of them uses a syringe to massage directly under the skin. Yes, a real injection, except it's not for medical treatment. According to those who go there, this method helps to clean out cavities and improve the skin. Apparently, it's good for the complexion. But looking at the pictures, we wonder if it's really worth it. Surely there are other ways to get beautiful skin without going through this.