LO has had very few diaper rashes in her life. I've started to use CDs more often now and I've noticed almost every time she's in the CDs for most/all of the day, she gets a red rash around her private area (not the elastic area). It's not bumpy. Maybe a tiny bit raised? Just mostly bright red.

We use both BG 4.0 and Freetimes, so I can't figure out if it's a material thing? I also usually use a liner. Do you think that could cause it? The CDs are pretty new, so I can't imagine they have ammonia build-up? They don't smell or anything.

Any ideas?