The Colgate Optic White Pro Series Charcoal Manual Toothbrush is widely praised for providing a thorough and effective clean, leaving teeth feeling smooth and polished. Many users observed an improvement in teeth colour, whitening, or effective stain removal, with some highlighting benefits for coffee drinkers and smokers. However, some did not notice immediate whitening or suggested consistent use with specific toothpaste for optimal results. The bristles are frequently described as soft, gentle, and non-irritating on gums, making the brush suitable for sensitive mouths. Conversely, a notable number of users found the bristles to be too hard, stiff, or harsh, causing initial discomfort or raw gums, with some requiring a period of adjustment. Some also noted issues with the brush head's size or shape, finding it too wide or rounded for effective cleaning in certain areas. The toothbrush's design, including its aesthetic appeal, colours, and sturdy, comfortable grip, received positive feedback. Features such as multi-height bristles were noted for effectively reaching all areas of the mouth. The integrated tongue cleaner was appreciated by many, though some found its efficacy varied or reported its absence. The central polishing star or rubber components on the brush head were highlighted for their polishing effect, though some users found them frustrating or felt they reduced cleaning efficacy. Many users expressed a preference for this toothbrush over previous ones, indicating an intent to repurchase or recommend it to family and friends. The product's quality and appealing packaging were also mentioned. Some reviews noted that the brush required a period of acclimatisation.