Washing straight hair every day isn't necessary for most people and can actually oust your hair of its natural oils, letting it dry and more prone to damage. Generally, hair experts recommend washing straight hair 2-3 times a week, depending on your hair type, scalp condition, and lifestyle.
If your scalp tends to become oily or you engage in activities that push heavy sweating, you may need to wash your hair more often. However, for people with normal to dry hair, washing it too frequently can cause the scalp to overcompensate by producing more oil. Instead of washing daily, you can use dry shampoo in between washes to soak excess oil and refresh your hair.
Using a mild, sulfate-free shampoo and a conditioner will help maintain hair health, keeping it smooth and shiny without stripping it of its natural moisture. For optimal results, it's important to listen to your hair’s needs and adjust your washing routine accordingly.
In summary, straight hair generally doesn't need daily washing—less frequent washing helps preserve its health and shine while minimizing damage.