I think I have found out, what he is doing.
In this picture (date: 2016-06-21) in the russian Facebook presentation of the clinic he says "there is hope" for hearing loss with IGF-1.
From what I have understood in some papers, IGF-1 is the "Insulin-like growth factor 1" and is linked to two pathways in the cochlea which promote the restoration of not-yet dead hair cells.
I will state the titles of the papers here only, because I am not allowed to copy them (copyright violation). When you have university access, you can access them for sure.
The first paper shows the general importance of IGF1 in the cochlea and the second paper shows the results of IGF1 treatment after sudden sensinoiral hearing loss. Both papers are directly shown in his facebook post:
1: Cediel, Rafael, et al. "Sensorineural hearing loss in insulin‐like growth factor I‐null mice: a new model of human deafness." European Journal of Neuroscience 23.2 (2006): 587-590.
2: Nakagawa, Takayuki, et al. "Audiometric outcomes of topical IGF1 treatment for sudden deafness refractory to systemic steroids." Otology & neurotology 33.6 (2012): 941-946.
By using google scholar i have found a new review paper about IGF1 which recaps the effect of IGF-1 on cochlear cells. In short, it says that IGF-1 was found to be safe to use and effective in HC protection and regeneration of not dead HCs:
Yamahara, Kohei, et al. "Insulin-like growth factor 1: a novel treatment for the protection or regeneration of cochlear hair cells." Hearing research 330 (2015): 2-9.
I think he is using IGF1 but it is still unclear what he is doing else. Because in this picture he is saying, the methods are: blood, fatty tissue and tubinate). Maybe he is using this as gel?