You will be given a definition of a task first, then some input of the task.
In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.

I bought this product as a means of trying to conquer eczema that randomly appeared on the back of my head at 37 years old. In any case or onset of something, I prefer to try the safest least harmful methods before diving into chemicals or medications. This shampoo worked for my itchy scalp. I have also noted my hair thickening and slowly rejuvenating in terms of health, shine, and luscious luster. Oh and this smells so fresh and so clean-clean. Pro Natural Thickened hair Decreased eczema exaggeration Fresh woodsy clean fragrance, not over powering Con Less lather than my personal preference I will say that when shampooing, I do not get a lot of lather. If I shampoo my hair twice the second shampoo does lather well.
Output:
5