Cooper Delivered · Hair Lab · Ingredient Education

Do You Really Know What’s in Your Shampoo?

Silicones are bad. Sulphates are stripping. Natural is always better. An influencer says one shampoo changed everything.

Haircare advice is everywhere.

But how much of it do we genuinely understand?

One person tells you that silicones will ruin your hair.

Another says sulphates should never touch your scalp.

Someone on social media claims a particular oil made their hair grow several inches.

A celebrity swears they have used the same eye cream, shampoo or moisturiser for twenty years.

A salon recommends one product.

Your friend recommends another.

The advertisement says something completely different again.

So who are you supposed to believe?

Most of us were never taught how shampoo works, what the ingredients do or how to separate useful advice from confident marketing.

We were taught to look at the front of the bottle.

The colour.

The promise.

The photograph of glossy hair.

The words repair, detox, natural, clean, professional or salon quality.

Then we were expected to make a sensible decision.

That is not because consumers are foolish.

It is because modern haircare is noisy.

Hair Lab is not here to tell you what to think.

Hair Lab exists to help you understand what you are buying.

The internet has made haircare louder, not always clearer

Hair advice once came mainly from hairdressers, family members, magazines and product packaging.

Now it comes from everywhere.

TikTok
Instagram
YouTube
Facebook groups
influencers
celebrities
salons
brands
friends
online forums
AI-generated content

Some of that information is thoughtful, informed and genuinely helpful.

Some is based on personal experience.

Some is sponsored.

Some is outdated.

Some is repeated without context.

And some sounds convincing simply because it is delivered confidently.

Social media rewards certainty.

Hair science often requires context.

Those two things do not always work comfortably together.

A ten-second video saying, “This ingredient is terrible,” is easier to share than a careful explanation about formulation, concentration, hair type, scalp condition, water quality and how the product is being used.

But the shorter answer is not always the more accurate one.

When one ingredient becomes the whole story

I recently heard a story involving an Australian hairdresser who travelled overseas and asked another hairdresser about a particular professional treatment.

The product was dismissed almost immediately.

The reason given was simple:

“It has silicones.”

That response made me stop.

Not because every silicone is wonderful.

Not because every silicone-containing product suits every person.

But because one category of ingredient had been used to judge an entire formula.

There was no discussion of:

which silicone was present
where it appeared in the ingredient list
what function it served
whether it was water-dispersible
the condition of the client’s hair
the treatment’s intended purpose
how often the product was being used
what else was in the formula

The ingredient had become the villain before anyone had asked what job it was doing.

That happens constantly in modern haircare.

We stop asking:

What does this ingredient actually do?

Instead, we ask:

Is it on the internet’s naughty list?

The Hair Lab Rule

Do not judge an ingredient until you understand its job.

This is one of the most important principles in Hair Lab.

Ingredients are not celebrities.

They are not heroes or villains.

They are workers inside a formula.

Some ingredients cleanse.

Some condition.

Some help water and oil stay mixed.

Some prevent a water-based product from becoming contaminated.

Some adjust the pH.

Some improve slip.

Some help fragrance remain stable.

Some help remove mineral buildup.

Some are included at tiny amounts to support texture, appearance or preservation.

Without understanding the role of an ingredient, it is difficult to judge whether it belongs in a product.

That does not mean every ingredient is appropriate for every person.

It means context matters.

You can begin exploring those different jobs in our Ingredients Glossary .

Why ingredient fear spreads so easily

Haircare marketing often relies on simple opposites.

natural versus chemical
clean versus toxic
professional versus supermarket
silicone-free versus silicone-filled
sulphate-free versus stripping
botanical versus synthetic

These categories feel easy to understand.

They also make excellent marketing.

The problem is that formulation is rarely that simple.

Water is a chemical.

Plants contain naturally occurring chemicals.

Natural ingredients can irritate some people.

Synthetic ingredients can be useful, stable and well tolerated.

A botanical extract can be meaningful within a formula.

It can also be present in such a tiny amount that its practical role is limited.

A preservative may sound unfamiliar, but in a water-based product it may be one of the ingredients helping keep the formula safe during normal use.

A long name does not automatically mean danger.

A familiar name does not automatically mean safety.

Understanding is more useful than fear.

Natural does not automatically mean better

I love botanical ingredients.

Cooper Delivered has an entire Botanical Ritual Library dedicated to exploring the plants, oils, butters and natural materials that have travelled through beauty rituals, gardens and generations.

Plants can carry history.

They can connect us to the land.

They can bring fragrance, texture, colour and meaning into personal care.

But loving botanical ingredients does not require pretending that every natural substance is suitable for every scalp.

Essential oils can irritate.

Plant extracts can trigger allergies.

Some natural oils can feel heavy on fine hair.

Some ingredients work beautifully at one concentration and poorly at another.

The word natural does not tell you:

how much of the ingredient is present
how it was processed
whether it suits your scalp
whether the complete formula is balanced
whether the product has been preserved correctly
whether the claim on the front matches the ingredient list

Botanical knowledge should deepen our understanding.

It should not become another form of fear-based marketing.

Synthetic does not automatically mean worse

The word synthetic often sounds harsh because marketing has trained us to associate it with something artificial or unnecessary.

But synthetic ingredients may be used because they are:

consistent
stable
effective at low concentrations
easier to formulate safely
less variable than some natural materials
designed to perform a specific function

That does not mean every synthetic ingredient is ideal.

It means the category alone does not provide enough information.

The useful questions are:

What is the ingredient?
Why is it included?
How is it being used?
Where does it appear in the formula?
Does the overall product suit the person using it?

A formula must be considered as a whole.

Pulling one ingredient out of context and declaring the entire product good or bad is rarely meaningful education.

What about silicones?

Silicones are one of the most frequently criticised groups of haircare ingredients.

They are often discussed as though they all behave in exactly the same way.

They do not.

Different silicones can be used to:

improve slip
reduce friction
help hair feel smoother
support detangling
reduce the appearance of roughness
add shine
help protect hair during styling

Some people dislike how certain silicone-heavy products feel on their hair.

Some experience buildup when products are layered repeatedly without suitable cleansing.

Others find that silicone-containing products make damaged or highly porous hair easier to manage.

The important point is not that silicones are always good.

It is not that silicones are always bad.

It is that “contains silicones” is not a complete product review.

What about sulphates?

Sulphates are often discussed as though they are one single ingredient.

In reality, the term covers different cleansing ingredients with different characteristics.

Cleansers remove oil, sweat, dirt and product buildup from the scalp and hair.

A stronger cleansing product may feel too drying for one person and extremely useful for another.

Someone with:

an oily scalp
heavy styling-product use
significant buildup
frequent swimming exposure

may need a different cleansing approach from someone with:

a dry scalp
bleached hair
tight curls
fragile or highly porous lengths

The question is not simply:

Does it contain a sulphate?

A better question is:

How strong is the cleansing system, and does it suit this person’s scalp, hair and routine?

What about preservatives?

Preservatives are another category frequently treated with suspicion.

But a bottled shampoo usually contains water.

Once water is present, the product needs to remain stable and suitable for normal use while being stored in a warm, damp bathroom and repeatedly opened.

Preservation is not included merely to make an ingredient list look complicated.

It serves a practical purpose.

This is also one of the differences between liquid and solid haircare formats.

A concentrated shampoo bar may contain very little water compared with bottled shampoo.

That changes:

how the formula is made
how it is stored
how it is packaged
how it is preserved
how much product is transported

It does not mean every bar is automatically better formulated than every bottle.

It means they are different delivery systems.

You can learn more in our guide: What Is a Shampoo Bar?

The front of the bottle is advertising

The front of a shampoo bottle is designed to catch your attention.

It may say:

infused with rosemary
with argan oil
keratin repair
detoxifying charcoal
natural hydration
strengthening protein
salon professional
clean beauty

Those words may point to genuine ingredients or product functions.

But they are still marketing language.

The presence of a plant photograph does not tell you how much plant extract is in the formula.

The word professional does not automatically tell you whether the product suits your scalp.

The phrase free from does not automatically tell you what the product contains instead.

The front is where the product tells its story.

The back is where you begin investigating it.

Celebrity and influencer recommendations need context

Celebrity endorsements are not new.

For decades, famous faces have appeared in beauty advertising claiming to use particular products.

Social media simply made the recommendation feel more personal.

Instead of a polished advertisement, we now see someone in their bathroom saying:

“I genuinely use this.”

Sometimes they may.

Sometimes the content may be sponsored.

Sometimes the product may have worked beautifully for that person.

Sometimes other factors may be involved, including:

professional styling
hair extensions
lighting
filters
genetics
medical treatment
nutrition
several products used together
salon services not shown in the video

A testimonial is not a formulation analysis.

A transformation video is not proof that one ingredient caused the result.

A product recommendation can be useful.

It simply should not replace your own questions.

Personal experience is real—but it is not universal

Someone can genuinely dislike a product.

That does not mean the product is fraudulent.

Someone can genuinely love a product.

That does not mean it will suit everyone.

Hair varies enormously.

Results can be influenced by:

scalp oil production
hair thickness
curl pattern
porosity
chemical damage
heat damage
water hardness
humidity
climate
wash frequency
application technique
how thoroughly the product is rinsed
what other products are being layered

That is why “this worked for me” and “this did not work for me” can both be honest statements.

The difficulty begins when personal experience is presented as a universal rule.

Shampoo cannot do everything

Another source of confusion is expecting shampoo to solve problems it was never designed to solve.

Shampoo primarily cleanses the scalp and hair.

Depending on the formula, it may also support:

manageability
moisture balance
clarifying
colour maintenance
scalp comfort
removal of styling residue

But shampoo cannot:

change your genetics
repair a nutritional deficiency
permanently fuse split ends back together
reverse every form of hair loss
undo severe chemical damage in one wash
make every scalp condition disappear without proper diagnosis

Good haircare can support the hair you have.

It cannot replace medical advice, nutrition, careful styling or realistic expectations.

That may not sound as exciting as a miracle claim.

But honesty is more useful than hype.

What should you ask when someone criticises an ingredient?

The next time someone tells you an ingredient is terrible, pause before throwing your product away.

Ask:

Which specific ingredient are they talking about?
What does that ingredient do?
Are they discussing the ingredient or the entire formula?
Are they talking about irritation, buildup, sustainability or something else?
Is the claim based on research, professional training or personal experience?
Does the concern apply to the concentration used in cosmetics?
Does the advice relate to your hair and scalp?
Are they selling an alternative product?
Is the content sponsored?
What information is missing from the claim?

You do not need a chemistry degree to ask better questions.

You only need to stop treating confidence as proof.

What should you ask before buying shampoo?

Before buying your next shampoo, ask:

What is my scalp actually doing?
Is it oily, dry, flaky, sensitive or affected by product buildup?
What condition are my lengths and ends in?
Are they dry, bleached, fragile, curly, fine or heavily styled?
What job do I need the shampoo to perform?
Regular cleansing, gentle cleansing, clarifying, colour support or something else?
Am I being influenced by the formula or the marketing?
Is the product suitable, or do I simply like the packaging and promise?
Do I understand the highlighted ingredients?
What are they likely contributing to the formula?
Will I use it correctly?
Even a suitable product can perform poorly when overused, under-rinsed or applied incorrectly.
Does the packaging align with my values?
Could a concentrated solid format reduce unnecessary bathroom waste?

Why Cooper Delivered uses shampoo bars

Cooper Delivered does sell shampoo bars.

It would be easy for me to finish this article by saying every bottle is bad and every bar is good.

But that would repeat the same oversimplification this article is challenging.

A poorly formulated shampoo bar can still be unsuitable.

A well-formulated bottled shampoo can still perform effectively.

The reason I believe in shampoo bars is broader.

A concentrated solid format can:

remove the need for a traditional shampoo bottle
reduce bathroom clutter
reduce the transport of water
encourage more intentional product use
travel without leaking
fit comfortably into caravans, gym bags and small bathrooms

Living off-grid in rural Western Australia has made me more aware of what enters our home, what takes up space and what eventually becomes waste.

The bar is not magical because it is solid.

It is practical because it allows us to rethink the delivery system.

Explore ingredients without the fear

Hair Lab is designed to help you investigate haircare without turning every unfamiliar word into something frightening.

Start with the Ingredients Glossary to explore ingredient names, categories and functions.

Then step into the Botanical Ritual Library to discover the plants, oils, butters and natural materials connected to hair, beauty, history, gardens and ritual.

These pages serve different purposes.

The Ingredients Glossary helps explain what ingredients are and why they may appear in a product.
The Botanical Ritual Library explores the deeper stories, traditions and uses of plant-based ingredients.

Together, they help you move beyond both blind trust and unnecessary fear.

Coming next: learn to read the label

This article begins the conversation.

The next Hair Lab guide will take you deeper:

How to Read Shampoo Ingredients Like a Hairdresser.

We will turn the bottle around together and look at:

why ingredients appear in a particular order
what INCI names mean
how to recognise cleansers
what preservatives do
where silicones may appear
how botanical extracts are listed
why fragrance can appear under different names
how to compare the marketing claims with the actual formula

You will not need to memorise every ingredient.

The goal is to learn how to investigate.

Turn the bottle around

The next time someone tells you a shampoo is terrible, do not panic.

Do not immediately throw it away.

Do not assume the loudest opinion is the most informed.

Turn the bottle around.

Read the ingredient list.

Ask what the ingredients are doing.

Ask whether the product suits your scalp, hair and routine.

Ask whether you are buying because you understand the formula—or because the marketing spoke first.

The Hair Lab Rule is simple: