How to make your shampoo bar last longer  (With A Nifty DIY Trick!) - Zero Waste Cartel

How to make your shampoo bar last longer (With A Nifty DIY Trick!)

In this article, we’ll SHARE how to store your shampoo bar so that it lasts as long as possible!

One of the most common questions we get is:

How long does a shampoo bar last? 

And while there is no black-and-white answer (we all have different lengths of hair!) the key to this is treating it well. 

Because, if you treat it well, it can last for over 90 washes.

And some of our customers have told us that their bars have lasted over a year!

Let’s take a look at how the shampoo bar compares against the shampoo bottle…

  • The average shampoo bottle is around 16oz

  • This gives us approximately 38 washes (if we use the standard tablespoon amount)

That means the average shampoo bar can last twice as long as the average shampoo bottle! 

And if you wash your hair every day... 90 washes = 3 months! 

That’s much longer than the typical shampoo bottle!

So how do we do this? How do we ensure our bars last as long as possible?

The answer is simple, it all comes down to the perfect storage.

Keeping your shampoo bar out of water is crucial… Regular containers just won’t cut it!

Below, we've shared a super simple DIY Shampoo Bar Holder video for you - using items you can find lying around your house!

Give it a go, and get the most out of your bar!

All you need is:

  1. A vessel: This could be an old tin, jam-jar lid, or shell
  2. Elastic bands or string

Just tie your elastic bands or string around your vessel - and voila, it's ready!

If you're not so into the DIYs - you can also purchase a Shampoo Bar Tray with an Inner Drying Rack here.

Shampoo Bar Tray


This shampoo tray has an inner drying rack to ensure your bars dry properly when not in use. 

...Extending your bar's life and saving you money. 

Give your shampoo & conditioner bars a stylish home and have them last 5x times longer!



Like a refreshing, moisturizing drink for your hair. Containing 10 X the recommended dose of Vitamin C which adds vitality and shine to your hair follicles.


With Jojoba and Abyssinian oils to add even more moisture and vitamins to your hair - even works well on colored and curly hair.


With healing peppermint oils which have been proven to fight scalp issues like dandruff, dry, & oily scalps - perfect to revitalize your hair, and you!

Alice G.
Alice is the Content Manager at Zero Waste Cartel. She's an environmental biologist, plant enthusiast & avid tea drinker.

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Oh my! I really liked the idea of the shampoo bar, but have long, dry, damaged hair I knew I would need to keep my expensive conditioner on hand. I bought your conditioning just because it was cute & I could give it as a gift. Boy was I amazed at what soft, shiny tresses I had after a few swirls of the citrusy conditioning bar! My hair hasn’t been this soft in years! Or nicer smelling either. I love these bars and have totally ditched my old conditioner. I’ll never use anything else and am turning all my friends on to it these too! Thank you for a great product. Molly P., Olympic Rainforest, WA State


The mango bar has been so wonderful for my dyed hair. I use a silicone soap dish from Amazon which keeps it dry on the shower shelf. The other cool thing is the smell of the mango bar makes my whole bathroom delightful. Looking forward to using the lemon and the peppermint ones in the future.One less plastic bottle to take to the recycling center!

jo ann

I love this tip! What a great idea. I have been storing my bath bars on my loofah and they are lasting much longer!

Anna Campbell

Brilliant!! Thank you! 👋🏻👋🏻💚


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