Necessity of baby detergent

Breanna
I was wondering if anyone has an opinion on how necessary it is to use dreft or another type of non scented detergent. I'm wanting to start washing clothes and prepare for the big day but we have not bought any specific laundry detergent for her. We used it for baby #1 for a couple months but he has never had any sensitive skin problems. My husband and I don't have sensitive skin either. Do you really think it's necessary to use a special detergent?