Instruct: Classify the given Amazon review as either positive or negative.
Query: I love Henna, but

be very careful to match the shade with your hair. I had used this product many times and it leaves the hair in wonderful shape, bouncy, shiney. But..it can turn lighter colored hair red. Brassy, otherworldly red. I have dark brown hair, but my ends have bleached because of the sun and being outside a lot. I am just waiting for the color to fade away.This is also a great product because it is all vegetable base. No added chemicals. It is a tint, not a dye, so it will fade in about a month and a half. But worth it to not put harmful chemicals on your head.