Everything You Need To Know About Shampoo Bars!



In human history, haircare has always existed in one form or another - and this activity has evolved time and time again. One of the latest hair care trends is the use of shampoo bars. That's right: solid shampoo! Have you tried it yet?

If you're wondering whether shampoo bars are a good option for your hair, keep reading. In this article, I'll explain everything you need to know about solid shampoo - and its benefits for both you and the Planet!


In a nutshell, a shampoo bar is nothing more than a solid version of liquid shampoo. For this reason, many people call it solid shampoo.

Just think about it: If soap has a solid and a liquid version, why can’t shampoo?

Flat lay shot of Bars Over Bottles solid shampoo

Shampoo bars have the exact same function as liquid shampoo. They cleanse and moisturize your hair, and offer extra shine and other benefits.

The difference here is how the product is presented, obviously. Instead of coming in a bottle, solid shampoo comes in a bar form. 

This brings us to a second – and obvious – difference: how it’s used!


First, you wet your hair  like you normally would.

Next, you can rub your shampoo bars directly onto your scalp and hair lengths until a foam is formed and massage your scalp like you would normally.

A man beaming with pleasure while shampooing his curly hair with Bars Over Bottles shampoo bar

Alternatively, you can rub the shampoo bars into your hands to work up some product, and then apply it to your scalp and hair lengths using your hands. Either way, after a quick scalp massage, you can rinse your hair like usual. 

After using shampoo bars, those who like to condition their hair can finish using… conditioner bars, of course! Shampoo’s faithful companion also has a solid version that can be used together with your preferred solid shampoo.

When it comes to how to use a conditioner bar, simply rub the bar in your hands until the product is released, and then apply it to the hair. Apply the product on your hair lengths and ends, avoiding the scalp and roots.


Natural shampoo bars have many unique aspects that justify the rise in market demand. Here are just some of the reasons they have so many fans!

Male and female models holding Bars Over Bottles hair bars

Savings: Since shampoo bars are highly concentrated products, they can be used for more washes on average than their liquid alternatives. When you buy shampoo bars, you aren’t paying for a product that is 80% water, as is the case with traditional liquid shampoo bottles.

Convenience: Once your shampoo bars are dry, they can easily be stored in a travel tin. This is great for vacation, since your bars can be packed in your carry-on without affecting your liquid allowance! 

Health: In general, shampoo bars use fewer chemical additives than liquid shampoo. In fact, almost all the options on the market are natural hair products: free of parabens, preservatives, sulfates, dyes, and other similar substances.

Sustainability: Shampoo bars help save water, an essential and finite resource, and can use simple and biodegradable packaging. This means we can get rid of the great villain of our time: plastic packaging! Unlike the plastic bottles of liquid shampoo, which are more than 90% likely to end up in nature — solid shampoo doesn’t have any kind of environmental impact.


Unlike traditional shampoos, my plastic-free shampoo bars don’t include saponification (soap manufacturing), a process widely used in the industry.

Saponification involves a caustic soda that makes the hair’s pH alkaline. This doesn’t match the hair's natural pH, which is acidic. 

The cleansing agent I use instead is a natural element derived from coconuts that is 100% sulfate-free. The result is a rich, creamy lather that is healthy for your hair.

Stack of Bars Over Bottles shampoo and conditioner bars with bubbles on a white background

But it’s not just the lack of saponification that makes shampoo bars take a different manufacturing route.

For example, there is a much higher concentration of active ingredients in solid shampoo than in liquid shampoo. In liquid shampoo, the product is diluted inside the bottle.

Can you believe that, on average, 80% of a liquid shampoo bottle is nothing more than water? That's right, water! Did you know that you were paying for this much water when you purchased liquid shampoo?

This leads us to another very interesting difference between solid and liquid shampoo. Because of all this water inside the bottles, the risk of microorganism growth ends up being higher. For this reason, most liquid shampoos need to include some chemical components to prevent this from happening.

The issue? Well, you can already imagine that these chemical substances aren’t exactly harmless, right? Besides the risk of harming your health, they can also cause environmental issues when they’re introduced into the sewage collection system.

Colorful chemicals on test tubes

But what about shampoo bars? Well, since they’re dry, there’s no stimulus for microorganisms to grow - and no need for harmful chemicals.


Since shampoo bars are more concentrated, they usually last longer compared to liquid shampoo. Each application produces lather quickly, and avoids the overuse of product. This makes the average solid shampoo bar last about 60 washes!

A woman’s hands holding Bars Over Bottles Purifying Shampoo

This means that each shampoo bar is equivalent to two bottles of liquid shampoo (6.7oz) and one conditioner bar is equal to 3 bottles of the same size conditioner. Now that’s value for money, right?

Bars Over Bottles shampoo bars vs. bottled liquid shampoo


Besides the bargain and environmental benefits, many people seek shampoo bars in an attempt to find a product that is more suitable for their hair type. 

Those who suffer from oily hair, for example, usually encounter a certain difficulty to find the perfect shampoo - one that doesn’t make their hair too heavy or too dry. That’s where shampoo bars come in.

Woman in white crop top shampooing her hair with Bars Over Bottles Purifying Shampoo Bar

Shampoo bars can regulate the scalp’s oils in a balanced way and provide a shiny and silky result. My Detox Shampoo Bar, for example, is very suitable for this purpose, since it offers a thorough cleanse without drying your hair.

By using the power of activated charcoal, it does a deep cleanse and controls oils, eliminates impurities, and helps to fight dandruff! 

All this with natural formulas!

In addition, my natural beauty bars are Low Poo or No Poo products, because they do not have aggressive sulfates in their formulas. In other words, using my natural shampoo bars for curly or frizzy hair, which usually has a more fragile and brittle structure, is also a great choice!


I, B.O.B, make 5 types of solid shampoo – and one of them is the perfect match for you! 

My Nourishing Shampoo Bar is ideal for normal or slightly dry hair since it nourishes and moisturizes hair.  

My Purifying Shampoo Bar, on the other hand, is best suited for combination hair that is starting to flirt with oil excess. It cleanses and regulates the hair in a balanced way. 

The Revitalizing Shampoo Bar is a lovely combination for chemically treated or damaged hair - it helps with moisturizing, nourishing, and rebuilding damaged strands. 

Speaking of moisture, my Moisturizing Shampoo Bar is perfect for curly hair, which cleanses, hydrates, and strengthens your curls while defining them at the same time. 

And my Detox Shampoo Bar is perfect for all types of hair, featuring an anti-pollution formula that cleanses impurities and manages oil production. 

So, after reading all this amazing information, what’s your opinion now about shampoo bars? Would you consider them an option for your hair?

My natural shampoo bars are produced with the highest quality ingredients, and are changing a lot of people's minds! :)


I take the ingredients I use in my shampoo bars seriously. Everything I use is natural, such as essential oils and plant proteins, and obtained from certified sources and suppliers to ensure the whole process is sustainable. 

I don’t ever use active ingredients that are aggressive to your health or to the environment.

Two boxes of Bars Over Bottles natural shampoo bars on the palm of four women with different hair types

Also, my natural shampoo bars are 100% plastic-free. This way, your shower routine is even more sustainable, generating less waste and less impact on the Planet!

And there's more: All my products are vegan and cruelty-free

This means that I don’t use any ingredients of animal origin and no animals were subjected to any kind of testing during the production stages.

Lop-eared white brown rabbit sitting on a green grass

Cool, right?

My shampoo bars are not only incredibly good for you and your hair, they also help us lovingly care for our home.

There’s so much good packed into these beauty bars!

So come take a look at my complete line of natural beauty bars (from shampoo bars and conditioner bars to hair mask bars and facial bars) and join me in this waterless, plastic-free revolution! 

my beauty bars