Hypoallergenic Detergent

I use hypoallergenic detergent because my one year old has super sensitive skin, if it’s not hypoallergenic she breaks out in a rash everywhere it touches her. I used dreft for awhile but it’s overpriced, and I started washing all our clothes together instead of separating every piece of hers from ours,

and started using gain natural elements which is also hypoallergenic but didn’t seem to clean our clothes very well so I tried seventh Generation and she’s had a rash ever since I started using it. I seriously need a recommendation for a hypoallergenic detergent that works good! TIA