How long should you keep a 2-in-1 shampoo+conditioner in your hair before you rinse it off(for best results)?

Thanks!! :-)How long should you keep a 2-in-1 shampoo+conditioner in your hair before you rinse it off(for best results)?
Shampoo shouldn't sit on your scalp for very long-- it will dry out your scalp and eventually cause irritation.





Even the one you're using (the 2 - in- 1 type).





After you've worked the product into your hair and produced lather, rinse it off right away.