Deep conditioning is a hair treatment designed to nourish and hydrate your hair more intensely than regular conditioners. It typically involves applying a thick, creamy product that penetrates the hair shaft, helping to repair damage, reduce frizz, and improve overall texture. This process is especially beneficial for those with curly hair, color-treated hair, or dry hair. To use a deep conditioner, you usually apply it after shampooing and leave it on for a specified time, often ranging from 10 to 30 minutes. Some people like to use a shower cap or heat source to enhance absorption. Regular deep conditioning can lead to healthier, shinier hair over time.