Sebamed Diaper Cream Caused Severe Rash on My Toddler

I purchased Sebamed diaper cream from the pharmacy for my 2.5-year-old son's diaper rash, and I am very unhappy with the results. His rash hasn't shown any signs of improvement over the past week, and to my dismay, the areas where I applied the cream are now completely covered in red blotches and blisters. We've used it multiple times in the past without encountering any problems. However, upon reviewing the feedback, it became apparent that numerous individuals had expressed similar grievances. What are the potential health consequences? Additionally, this cream comes with quite a hefty price tag!