Among the best remedies for diaper-related redness is olive oil, which is mentioned in the Qur'an. Argan oil is also a good way to reduce redness, and the two oils can be used alternately.
If the child has itching, it can be relieved with a chamomile-based cream.
Finally, to relieve irritation and marks, it is recommended to use a lavender-based talc.
With these remedies the child will be comfortable and will be able to sleep peacefully in sha Allah.