Yes, hooded dryers can be used for treatments or conditioning masks. Hooded dryers provide a gentle heat that can help to enhance the effectiveness of hair treatments or conditioning masks. The even distribution of heat from the hooded dryer allows the product to penetrate deeply into the hair, resulting in improved moisturization and overall treatment results. It is important to follow the instructions provided with your specific treatment or conditioning mask, as some products may recommend specific heat settings or durations for optimal results.