Most people think they know their hair type… until they sit in a stylist’s chair and realize they’ve been describing it wrong for years.

“I have thick hair.”

“My hair is curly.”

“My hair is damaged.”

Sometimes those things are true. Sometimes they’re only partially true. And sometimes they’re actually describing completely different things altogether.

Here’s the confusing part: hair texture, density, strand thickness, dryness, and damage are NOT the same thing.

And if you don’t know the difference, it becomes really hard to choose the right products, heat settings, haircut, or even the right salon service.

So let’s simplify it.

By the end of this post, you’ll know how to identify your actual hair type and understand what your hair has probably been trying to tell you this whole time.

Why Knowing Your Hair Type Actually Matters

Your hair type affects almost everything:

• the shampoo and conditioner you should use
• how much heat your hair can tolerate
• whether lightweight or richer styling products work best
• how often your hair needs moisture
• which haircuts will actually cooperate with your natural texture
• how your color services should be approached
• and even how your hair changes as you age

A lot of people spend years fighting their hair when really… they just never learned how it naturally behaves.

And honestly? Most of us weren’t taught this stuff correctly.

Your Hair Type Is Made Up of 3 Main Things

1. Diameter

How thick each individual strand of hair is.

2. Density

How much hair you have overall.

3. Texture

How your hair naturally behaves and dries.

Once you understand those three things, choosing products and routines gets WAY easier.

1. Hair Diameter: Fine, Medium, or Coarse

Hair diameter refers to the thickness of ONE individual strand of hair.

The easiest way to figure this out is to take a single strand between your fingers and gently roll it.

Fine Hair

If you can barely feel the strand at all, you likely have fine hair.

Medium Hair

Again, if you can feel it slightly, but it still feels soft and subtle, you probably have medium hair.

Coarse Hair

With this hair type, the strand feels very noticeable, sturdy, or textured between your fingers, you likely have coarse hair.

One of the biggest misconceptions I see behind the chair is people confusing FINE hair with THIN hair.

They are not the same thing.

You can absolutely have:
• fine hair with a LOT of density
• coarse hair with low density
• thick-feeling hair that’s actually made up of fine strands

This matters because fine hair usually needs lighter products, lower heat, and gentler handling than coarse hair does.

For example, if you have fine hair and you’re constantly using heavy oils or high heat, your hair may feel limp, greasy, or overly fragile.

I wrote a post specifically for damaged hair that is fine. It’s called, The Essential Guide to Caring for Fine Hair After Chemical Treatments.

2. Hair Texture: Straight, Wavy, Curly, or Coily

Texture is your hair’s natural pattern.

And this is where things get interesting because MANY people think they have “frizzy hair” when they actually have hidden texture.

The best way to determine your natural texture is to let your hair air dry naturally without heavily brushing or heat styling it.

Straight Hair

Dries mostly smooth with little to no bend.

Wavy Hair

Dries with loose bends or uneven movement throughout the hair.

Curly Hair

Forms visible “S” patterns or spirals.

Coily Hair

Forms tighter curls or zig-zag patterns with lots of shrinkage and movement.

Here’s something important:

Frizz is not technically a hair type.

A lot of frizz is actually texture trying to exist.

I cannot tell you how many people discover they have naturally wavy hair after years of brushing it like straight hair.

Once you start working WITH your texture instead of against it, your hair usually becomes easier to style and healthier overall.

This is my exact approach to every haircut I do behind the chair. If you’e local to San Francisco and looking for someone to help you understand your hair, book an appointment with me. I would LOVE to help you!

3. Hair Density: Thin, Medium, or Thick

Density refers to how MUCH hair you have on your head overall.

A quick way to check:

Take a small section of hair near your scalp and gently push it together.

Thin Density

You easily see your scalp between the hairs.

Medium Density

There is some scalp but find yourself pushing the hair closer to your scalp to force the hairs to split to see the scalp more.

Thick Density

You barely see your scalp at all except where a deep part is made.

Density affects WAY more than people realize.

It changes:
• how long your hair takes to dry
• how much product you need
• whether your hair feels “heavy”
• how your stylist should layer your haircut
• how color services should be applied
• and even how often you may need maintenance appointments

Hair Changes Over Time (And Nobody Talks About It Enough)

Here’s something I wish more people understood:

Your hair type can evolve throughout your life.

Hormones, stress, nutrition, aging, medications, heat styling, and chemical services can all influence your hair over time.

Many people notice changes like:
• reduced density
• increased dryness
• changes in texture
• loss of shine
• slower growth
• increased fragility
• scalp sensitivity

And no, you are not imagining it.

One of the biggest conversations happening in modern haircare right now is scalp health and circulation because healthy hair growth starts at the scalp level.

This is one reason I became interested in treatments like LED light therapy.

Red light therapy has been studied for its ability to support circulation and create a healthier environment for the scalp and skin over time.

At the salon, I incorporate the Celluma LED face and scalp mask into some services and Glow Up add-ons because healthy hair and healthy skin are deeply connected.

It’s not about “stopping aging.” Aging is normal.

It’s about supporting your hair and scalp as your needs change over time.

Interested in how LED treatments can support your healthiest scalp and hair? I break it all down in, The Future of Healthy Scalp and Hair? In Salon LED Light Therapy.

Healthy Hair vs Dry Hair vs Damaged Hair

These are also NOT the same thing.

Dry Hair

Hair that temporarily lacks moisture.

Usually improved with hydration, conditioning, and better product choices.

Damaged Hair

Hair that has structural breakdown from heat, chemicals, overprocessing, or mechanical stress.

Damaged hair often needs protein balance, trimming, gentler handling, and time.

Healthy Hair

Healthy hair can still be:

• wavy
• curly
• frizzy
• voluminous
• textured
• silver
• aging

So, healthy hair is NOT the same as perfectly smooth hair.

That one misconception alone has caused people to overheat, over-style, and over-process their hair for years.

So… What’s Your Hair Type?

By now, you should have a better understanding of your:

Diameter

Fine, medium, or coarse

Density

Thin, medium, or thick

Texture

Straight, wavy, curly, or coily

Once you understand those three things, everything starts making more sense:

your products
your styling routine
your drying time
your haircut
your color services
and even why certain trends work beautifully for some people but not others.

Healthy hair usually isn’t about doing more.

It’s about finally understanding what your hair actually needs.

And honestly? Most people were never taught that.

If you have questions about your hair type, texture, or scalp health, leave them in the comments or bring them up at your next appointment. I LOVE this stuff.

And yes… I can usually tell your real hair type within about 30 seconds of touching it.

Don’t worry, with practice, you’ll get there!