baby detergent- to use or not to use?

Megan
I'm going to be a first time mom to my lovely 🌈 baby in January so I want to stock up on things I'm going to need. Where I live baby detergent is almost seven dollars for 25 loads or something like that.. If I buy hypoallergenic detergent without the dyes and perfumes would it work just as well as baby detergent? Just looking for opinions and a little education if anybody is willing to share! Thanks guys!!