Bought this bottle of "The Last Dab Xperience" as a Xmas gift for my son and I (I like hot stuff and he likes the show). We just took off the wrapper around the top and opened it up. I can't tell if the discolored section at the top is spoiled or just sauce that dried at the top of the bottle. Never had it before and the only smell coming off it is capsaicin. If it was a cheaper bottle I'd toss it and buy another one, but I don't want to waste a full bottle by being overly cautious. Any help?