Should I use dry shampoo before bed? Is nighttime the best time to use it?

woman in nightgown applying dry shampoo to hair

  • The best time to use dry shampoo is before going to bed.
  • This is the time when your scalp secretes the most oil or sebum.
  • But it’s important you only use dry shampoo before going to bed at most ONCE A WEEK. And I’ll tell you why later on.


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 Why is before going to bed the best time to use dry shampoo? 

For a purely biological reason.

During the night is when your scalp releases the most oil. It’s the oil your scalp accumulated during the day as a result of your diet, your habits, and other factors.


Your scalp distributes much of that oil throughout your hair to moisturize and nourish it.  But it also releases excess oil through your pores. 


So it’s likely that every morning when you wake up, you notice your hair is oilier than the previous night.

very greasy roots

Now, what if you wake up every morning with a greasy head? You can use dry shampoo the night before. Because  dry shampoo will encapsulate the sebum your scalp secretes, and when you wake up, you’ll feel fresh, renewed, and without a trace of oiliness. 



 YOU MUST NOT USE DRY SHAMPOO EVERY NIGHT BEFORE BED.  If you do, all you’ll do is dry out your scalp.


Let’s now take a look at the ideal routine if you want to use dry shampoo once a week before going to bed.


How to use dry shampoo once a week before bedtime

Batiste dry shampoo

I believe it’s important to emphasize that you should only use dry shampoo once a week before you go to bed. Please read this carefully and don’t just read into my sentences what you want to think.

In general, I’m quite clear and leave nothing open to interpretation.


 If you use dry shampoo several nights a week before bed , you will dry out your hair, your roots will go even greasier, and what’s worse, the pores of your scalp clog up.

That will prevent your scalp from breathing. That means the hair follicles will weaken and you could suffer breakage right from the roots.


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So let’s start from the premise that it’s best to wash your hair at most three times a week unless your dermatologist has indicated a higher or lower amount of washes due to a specific pathology.

Why should you only wash your hair that often?


Because  if you remove the oil secreted by your scalp every day,  your hair won’t be able to absorb nutrients and moisture. Therefore, your hair will grow brittle, weak, and dull.


So if you want to include dry shampoo in your hair care routine, you should replace one of your three weekly washes by using dry shampoo in the evening.

For example:

  • Monday: wash your hair with shampoo and conditioner.
  • Tuesday: don’t wash your hair.
  • Wednesday: don’t wash your hair.
  • Thursday: use dry shampoo before going to bed.
  • Friday: don’t wash your hair.
  • Saturday: don’t wash your hair. It will also be OK if you wash it because of an important appointment, for example. In that instance, don’t wash it on Sunday.
  • Sunday: wash your hair with shampoo and conditioner, if you didn’t wash it on Saturday.


Remember,  use dry shampoo by spraying it fifteen to twenty centimeters away from your roots.  Then massage your hair with your fingers to distribute the dry shampoo on your scalp and then brush to remove any remaining white powder.

It’s also a good idea to shake the can before you spray the dry shampoo on your hair. The powder tends to settle in the can.



The truth is that the best time of day to use dry shampoo is before going to bed. Nighttime is when your scalp secretes the most oil.

But remember, you can only use it once a week.

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