There’s a common belief that you should frequently change your shampoo and conditioner to feel the benefits to your hair. But is this really the case?

There’s no proof to the myth that your hair builds up ‘resistance’ to certain products over time. However, if you were to use one shampoo and conditioner over the space of a year, there would be months when your hair would feel nourished and healthy, interchanged with times when it may feel dry and dull.

There isn't concrete scientific evidence that hair gets "used to" certain shampoos, making them less effective. However, it's possible that over time, hair might become accustomed to a particular formulation, resulting in reduced noticeable effects. Switching shampoos occasionally can help prevent buildup and maintain desired results.

Change your shampoo and conditioner when your hair tells you to. Don’t just reassess the products you’re using at the end of each bottle. Consider investing in maybe 2 or 3 different shampoos and conditioners, then pick and choose which one you use based on how your hair feels.