Size Matters: How Much Shampoo Should You Be Using?

The first step to a healthy hair journey is getting the right product. but after that, you’ve got to use the product correctly, or you won’t see the desired results you’ve been dreaming of.


It’s time to unfold the mystery for our shampoo product users on how much treatment you should be using. You’ve most likely heard many recommendations ranging from spare change sizes to walnuts and cherries. Or maybe you’ve heard the cupping of the palm routine that a lot of folks will swear by. It’s a confusing subject for something so important. I mean, you don’t want to be wasting product, but you also want your scalp to have the proper amount of nourishment, right? So where do you draw the line? Let’s break it down.

The biggest reason you’ve heard so many different size recommendations is that it honestly depends on your hair type. Using shampoo is just like using sunscreen—some people need a light spritz, while others are adding a new layer of skin to every inch of their body. It varies, but from cute pixie cuts to mermaid waves—shampoo size matters.

An average recommended use is about two teaspoons, and you’ll find this suitable for MOST people. But when should you be using more?



For starters, the length will make a huge difference. You want those nutrients to get from root to tips, so you might have to go the extra mile. We recommend adding an extra ½ teaspoon for every inch past an average 6 inches.


Another component to be mindful of is curl and texture. If you have thick, coarse hair, your locks require much more lathering than the average ‘poo user but don’t get crazy. A little can go a long way.

Color and heat damage

If you’ve made multiple trips to the hair salon, and your hair color changes with the season, you might want to be using a bit less shampoo than the average recommended size. Zenagen products are color-safe and made for all hair types, so it won’t affect the color you have now, but your hair needs less restoration than someone with untouched hair.


Shampoo frequency is another thing to be cautious. If you’re using Zenagen Shampoo Treatment, then you’re washing every other day, as recommended. The more time between washes means more oil and dirt to cleanse. Zenagen users should stick to the recommended sizes above, but for those of you out of the loop, consider using more shampoo the longer you wait to wash.

To be honest, you know your hair better than anyone else—the way it falls, the way it frizzes, the way it washes. Know that you’re using the right amount of shampoo if it works into a rich lather on your damp hair and provides coverage ALL OVER. Remember, Zenagen is sodium laureth sulfate-free, so don’t look it won’t lather like the drugstore shampoos you may be used to. You’re still going to get a little foam, but it’s a more concentrated formula that is able to create major impact without the added harsh chemicals. If it’s not lathering to your liking, a good tip is to make sure your hair is extra wet. This helps with the lathering process and will help you from wasting product.

Best Tips for Washing:

  • Rinse first with warm water
  • Work Shampoo into your hair for at least a minute (Zenagen Scalp Massager will help make this process a lot easier and will work more efficiently)
  • With Zenagen, let sit on the scalp for at least 5 minutes
  • Rinse with cold water
  • For oily scalps, rinse twice