Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: L'Oreal Natural Match No-Ammonia Color-Calibrated Creme, Brown Black, 3W Warmer

Excellent product and wonderful hair color, without any ammonia damage to your hair or scalp. This gentle "W" series color provide excellent tone, vibrance and depth for a more natural-looking hair color. It is sad to know L'Oreal is discontinuing this product! They need to keep this line of product!