This is a great option for a barrier or preventative measure. However, as a few others have mentioned I do think this is not an ideal option for an active rash. It does not cling well to a red, sensitive bottom even when freshly dried. I use this when slight irritation is present or when I am fearful of a rash becoming an issue like when trying new foods, teething, etc. I also use this to prevent rashes when baby will be in a diaper for a longer period of time (when they start sleeping through the night, for example) overall it is a staple in our home and has been through all 3 of my children.