Few people follow reverse hair washing where they use a conditioner before shampoo. But these methods do not have any scientific support to support their effectiveness.
Steps:
Co-Washing method allows you to use a conditioner without shampoo.Co-washing is when you wash your hair only after applying the conditioner. You basically skip the shampoo.
Shampoo and conditioner go hand in hand. Shampoos cleanse your hair and conditioners moisturize it. To keep your hair healthy and strong, it is always better to use both.
Wrapping Up
Shampoo and conditioners deep clean your hair and moisturize it. Each has its own set of components and uses. Also while conditioners are usually applied after shampooing your hair, reverse and co washing is done by those who have dry, damaged, hair. It is best to know your hair and choose products accordingly.