I have never really had sensitive skin, but when I tried out a new laundry detergent, I noticed a rash on my back that spread to my stomach and shoulders.
This was an itchy rash on my back which drove me crazy. It took me awhile to figure out what had caused it. It finally dawned on me that I had switched laundry detergents.
I quit using it and went back to what I had been using before. It took a few days for the itching to stop, and eventually the whole rash went away. Ever since then I have been a lot more cautious when I try out a new product.
I still don't know what ingredient in the laundry detergent made me break out. I didn't put any cream on it, but just let the rash resolve itself.