Does saline sprays dries out your nose?

Hello, I had septorhinoplasty 3 months ago and my nose gets dry still, especially with this hot weather. my surgeon told me to use a saline pray and I being using it but I noticed that I have to used it at least 5 times a day. will it dry out even more my nose if I use it to much? I have hear from a few people that saline sprays dries you out and you should use it only when you have allergies so it can stop the runny nose. does saline spray help with just dry nose? Thanks!