I think it's separate shampoo and conditioner and bar soap that's provided. You can ask for more and they will replace it if they see you have used it- at least that's been our experience.
The hairdryer is actually pretty strong. I bring my own because we drive, and I usually dry may hair in the actual room while one of my guys is getting ready in the bathroom area. If I was flying I wouldn't bring my own.
There are plugs in the bathroom area (DS used this for his phone), on the wall by the bed closest to the bathroom (I used this for my phone but had to remember not to step on it since I don't have a long charging cord) and in between the beds I think (if I remember this is where DH charged his phone). There is also a set of plugs on the wall behind the table and chairs. We used this to plug in the ECV each night. The cord the rental company gave us was long enough to stretch across so DS could park the ECV next to the bed.
View attachment 178722