The frequency at which you should wash your hair depends on various factors such as your hair type, scalp condition and lifestyle. As a general guideline, most people should wash their hair 2-3 times a week, but some may need to wash more or less frequently.

If you have fine or oily hair, wash it more often, as the scalp produces more oil that can weigh down the hair and make it look greasy. On the other hand, if you have curly or thick hair, wash it less, as these hair types tend to be drier.

Additionally, if you exercise regularly or live in a humid environment, wash your hair more frequently to remove sweat and buildup of impurities. Conversely, if you have a dry scalp or colour-treated hair, wash less frequently to avoid stripping the hair and scalp of natural oils.

Ultimately, the best frequency for washing your hair is the one that works for you and your hair type.