Can I use the Biotene mouthspray for lip piercing?

I was looking for the Biotene mouthwash here where I live(Arnhem, The Netherlands) but I couldn’t find the mouthwash. They only have the mouthspray, can I use that mixed with water and use it like a mouthwash for my piercing after eating?

My piercer give me a pack of seasalt but it looks like that wouldn’t last me a week. He said to use it every time after I eat but yea it’s just a small pack. So I went looking for alcohol free mouthwash like Listerine but it all had alcohol in it. So I remember I read that you can use Biotene mouthwash but the only thing I found was the mouthspray.