Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Warning: Rash!!!

I've tried a lot of products over the years. Even though I don't have sensitive skin I bought this product because of it's all natural/organic image. I have a few blemishes on my face but I've never been happy with the appearance of my skin. I was hoping this product would clear my acne, smooth out my skin and give it a more even tone/feel. I used this product for about 4 days following the directions religiously. After the fourth day my skin became irritated and my face and neck broke out into a red, bumpy, itchy rash that looks and feels like sandpaper. I immediately discontinued use and it has been almost a week and the rash has not cleared up! I've read some reviews where the rash can last up to two/three weeks! not fun! I was highly disappointed in this product and I've tried a lot of different products but none of them have caused me break out in a rash like this one.