Surprisingly there is a private residential flat not a hair salon. The photos on the salon’s profile are not real! Unfortunately, it was difficult to communicate with Eduardo as he couldn’t speak English. I watched a video for Hair Botox on their instagram page, but I found out that to get that treatment, I should pay 110€ instead of the price (50€) that booked for.
Eventually I decided to cancel it as I was not happy with the treatment, new price, and the atmosphere and Eduardo kindly accepted.