Yes, as long as they are made by reputable manufacturers. Commonly, they contain the same active ingredients as the professional products we use, but in a much lower strength which means they take longer to work. However, they may cause significant pain or sensitivity after use when used inappropriately! We recommend discussing this with your dentist before use. This may include a thorough examination for tooth decay to prevent unnecessary discomfort from the use of over-the-counter whitening products. We would also recommend ensuring teeth are professionally cleaned before use to achieve the best possible outcome.