The mestiza muse

be beautiful. be natural. be you.

Hello There!

I'm Verna,
Your Curly-Haired Friend.

Curly hair is like a box of chocolates, you never know what you're going to get. It could be super-defined one day and a frizzy concoction the next day – and it's never exactly the same from one head to another. Our mission is to equip you with the necessary tools for restoring and maintaining healthy locks and celebrating the hair you were born with! 

Mastering the Moisture Protein Balance: A Comprehensive Guide

August 19, 2023


Verna Meachum

Image of a scale with the words moisture protein balance with a dark background.

We only work with and promote products from companies that we trust and feel are good for our consumers to use. We are reader-supported. If you decide to make a purchase through one of our links, we may earn an affiliate commission. Please read our disclosure for more info.

follow @themestizamuse
Curl care

With extensive experience in the beauty industry, I specialize in writing for curly hair care brands, websites, and magazines.

Not only do I have curly hair, but my children, friends, family members, and even friends who are professional curly hairstylists, each with their unique curly textures.

 You get the point :) 

I also partner with a friend who holds a Ph.D. in chemistry and works as an R&D Chemist, ensuring our content is scientifically accurate and help us navigate through the misinformation around curly hair care. 

Hi,I'm Verna

product reviews

Prepare yourself for an unforgettable adventure and make sure to pack these essential items to take with you on your journey.

Great hair goes beyond using shampoos, conditioners, and styling products. Shop my favorite must-haves.

After years of requests, I'm finally sharing my go-to skincare products.

Give your space a quick refresh with these ultimate home decor ideas.



Last Updated on September 6, 2023 by Verna Meachum

Is a balanced regimen of moisture and protein truly essential? Opinions are divided – some argue in favor, while others question its necessity.

The moisture protein balance in hair care refers to the delicate balance between maintaining adequate moisture and preserving the structural integrity (protein) of the hair shaft, ensuring optimal health and appearance.

This intricate relationship may be likened to an elegant dance. An excess of moisture can render curls limp and lifeless, akin to deflated soufflés, while an overabundance of protein can result in hair that is stiff and unyielding, far from the desired flexibility for optimal styling.

To guide us on this curl-tastic quest, I’ve summoned my hair-whispering accomplice, a true expert of hair and cosmetic formulation, our very own hair scientist extraordinaire.

He will help us navigate the intricate seas of chemical compositions, the mechanisms of moisturization and protein treatment, highlighting their crucial roles in hair health, and offer guidance on developing a well-rounded daily hair care routine.

What is Moisture Protein Balance?

Infographic listing about moisture protein balance - Balanced Healthy Hair.

Picture your precious curls as a delicate ecosystem, each strand a tiny, intricate masterpiece. The moisture-protein balance is the harmonious equilibrium that keeps this ecosystem thriving.

Think of moisture as the life-giving rain that hydrates and plumps your hair, maintaining its elasticity and suppleness.

Now, envision protein as the sturdy scaffolding, providing structural integrity and strength to your locks.

Just like a symphony, when these elements are in perfect balance, your curls are a masterpiece of resilience, bounce, and shine.

Too much moisture without sufficient protein, and your curls become weak and lackluster.

Conversely, an excess of protein without ample moisture renders them stiff and brittle. Striking this delicate equilibrium is the cornerstone of a vibrant and healthy curly crown.

Navigating the Moisture-Protein Balance: Lessons from My Curly Hair Journey

When I come across statements like “there’s no need to worry about balancing moisture and protein,” I respectfully disagree. It’s easy to hold that perspective if your hair hasn’t encountered the challenges.

However, I’ve noticed that within the curly hair community, some have carried the moisture/protein balance to an extreme, leading to misinformation and a perplexing state of confusion.

Which is why finding a middle ground and clear guidance becomes paramount, allowing us to navigate the complexities of moisture and protein with confidence and clarity.

In my initial journey into the Curly Girl Method, I meticulously adhered to the prescribed routine. Around four or five months into this voyage toward healthier hair, my tresses began to undergo what’s known as hygral fatigue and over-conditioned hair.

A photo showcasing my hair's encounter with hygral fatigue.
Here is a photo showcasing my hair’s encounter with hygral fatigue. Despite its seemingly normal appearance, my hair was limp, devoid of structure, and felt as though it would disintegrate with a mere touch.

The Curly Girl Method emphasizes minimal use of shampoos and leans heavily on conditioning. However, this approach led my hair down a path of distress.

What I wasn’t informed about were protein treatments. Instead, the advice I received boiled down to trial and error with different products until stumbling upon the right fit.

While this guidance isn’t inherently flawed, it left me yearning for a deeper comprehension of the delicate interplay between moisture and protein in my hair care routine.

Maintaining the right balance between moisture and protein in your hair is a crucial foundation for the effectiveness of any hair care routine and is instrumental in combating hair breakage.

Choosing the right hair products with understanding is crucial for attaining and upholding the moisture-protein balance, as product selection significantly shapes the health, texture, and overall look of your hair.

A considerable number of us, myself included, stick devotedly to a single product or product line, unaware of how its intended moisture and protein effects impact our hair.

Often, our choices stem from word of mouth or observing others’ impressive outcomes. Regrettably, these selection methods often fall short.

Without assessing products through the lens of moisture versus protein, you’re missing out on unlocking the full potential of your hair care arsenal.

Nurturing Hair: The Moisture-Protein Balance for Everyday Grooming

Hair, a distinctive composite primarily composed of keratin protein, plays a pivotal role in shaping our everyday appearance and grooming.1

However, the routines we follow for everyday grooming and styling inadvertently lead to hair fiber damage, resulting in challenging manageability.

These damaged hair fibers exhibit characteristics like dryness, roughness, porosity, and increased susceptibility to breakage.

To counter this, moisturization or hydration serves as a popular remedy, effectively replenishing the hair’s water content and countering dryness.2 This serves to combat dryness and curtails the undue loss of water molecules from the hair shaft.

Concurrently, the application of protein treatments becomes imperative for reinforcing hair fibers and mitigating breakage.

These two approaches work in tandem, necessitating a delicate equilibrium to foster the development of robust, naturally textured, and resilient hair fibers.

The Significance of Balancing Moisture and Protein

Moisturizing agents and proteins stand as highly regarded components for conditioning hair, yet they operate through distinct mechanisms.

Moisturizing agents encompass the capacity to either infuse water molecules into the hair fiber, fostering hydration, or create a protective barrier that safeguards against water loss from the hair’s surface, known as an occlusive coating.

On the other hand, proteins function as robust fiber-strengthening agents, enhancing the mechanical resilience of the hair strand.

The optimal health and natural texture of hair hinge upon the presence of both elements. Neglecting either moisture or protein would compromise the integrity of the hair.

Moisturizing agents remain incapable of bolstering the mechanical fortitude of the fiber, while proteins, or amino acids, lack the ability to substantially introduce water molecules into the hair strand.

These distinctions underscore the vital necessity of incorporating both moisture and proteins into your hair care regimen, as they play distinct yet complementary roles in nurturing your locks.

The Mechanism of Hydration

A photo of my hair that is well-hydrated, moisturized, and conditioned.
Here is a photo of my hair that is well-hydrated, moisturized, and conditioned.

Humectants play a vital role in absorbing water molecules from the atmosphere and transferring them to the hair fiber.

The efficiency of this process varies based on environmental humidity levels and the specific chemical makeup of the humectants.

Once water molecules are introduced to the hair’s surface, they engage in interactions with the hydrogen bonds within the hair’s chemical structure. This interaction results in the breakdown of existing bonds and the formation of new ones.

Traditional humectants like glycols, such as glycerin, propylene glycol, and sorbitol, are frequently found in hair care products.

In contrast, advanced, next-generation hydrating ingredients like Sodium PCA, Zinc PCA, and Betaine demonstrate superior effectiveness in enhancing the hair’s moisture content.

Remarkably, these ingredients offer enhanced results without causing any undesirable stickiness to the hair fiber.

Moreover, they provide an improved tactile experience both when the hair is wet and when it’s dry.3

Interaction of Proteins with Hair Fiber

Image of protein interacting with hair strand.

Proteins operate in distinct ways. They possess the capability to either permeate the cuticle layer and traverse deep into the hair cortex or envelop the outermost layer, forming a water-soluble protein film around the shaft.

This penetration process is influenced by factors such as the molecular size, shape, and molecular weight of the peptide fragment, as well as the pore dimensions of the cuticle layer. 4,5 This interplay underscores the complex control over their penetration.

Damaged hair fibers, often stemming from chemical processing, have higher porosity and poor mechanical strength due to protein loss.

Small protein molecules effectively infiltrate the cortex, filling the vacant spaces within and fortifying the cortical cells, thereby amplifying the fiber’s mechanical robustness.

In contrast, large protein molecules remain at the hair’s surface, where they form a delicate water-soluble protein coating. This coating possesses hygroscopic qualities that boost the hair fiber’s moisture levels.

Thus, proteins contribute in tandem to enhancing both the fiber’s mechanical strength and its moisture content.

Nevertheless, it’s worth noting that their power in moisturization, hydration ability or amount of water they can deliver to fiber, is relatively low when compared with traditional humectants and hydrating agents (examples discussed above).

Hair’s Dual Necessity: Moisture and Protein

Image of Black woman holding hands up with two jars and the words moisture and protein in them.

The preceding discussion above underscores the unequivocal requirement for both moisture and protein in nurturing hair health. These two essential elements possess different chemistries and yield different results.

Disregarding either moisture or protein can undermine the overall well-being of the hair. Striking an optimal equilibrium between the two is vital to achieving the desired healthy hair fibers.

Also, this requisite isn’t confined to any particular hair type or ethnic background; it extends universally.

Hair characterized by damage, featuring high porosity and severe dryness, calls for a substantial infusion of both moisture and protein.

Similarly, curly hair of various types inherently tend to exhibit fragility, coarseness, and a deficiency in moisture.

Even the exceptionally coiled Afro-American hair, renowned for its distinct curl pattern, shares a similar thirst for moisture and protein. This is particularly evident in the context of its elevated porosity and acute dryness.

The universal mandate emerges clear: all these diverse hair profiles, spanning a spectrum of textures, urgently demand the symbiotic attention of both moisture and proteins.

How to Restore Moisture Protein Balance

Image of the word balance.

Individuals, irrespective of hair type or ethnic heritage, should strive to establish a balanced hair care routine that seamlessly integrates both moisturization and proteins.

Regrettably, there isn’t a magical formula that can precisely determine the ideal amount of moisture and protein your hair requires.

The equation becomes further complicated when factoring in variables such as chemical treatments, daily styling practices, and the unique porosity of your hair.

The equilibrium between moisture and protein is an intimate matter, differing from one individual to another with diverse hair types and varying states of hair health.

Your task revolves around maintaining your hair at a balanced midpoint within the moisture-protein spectrum.

Rather than rigidly adhering to a fixed schedule, adaptability becomes your greatest ally in sustaining this equilibrium.

Attempting to meticulously schedule each treatment often proves challenging to uphold and seldom yields enduring results.

Why? Because hair is fickle and its needs can change DAILY. You simply have to let your hair be your guide.

Creating an optimal regimen demands a process of trial and error to decipher your hair’s unique requirements.

Restoring Balance to Over-Moisturized Hair

Curly hair’s quest for moisture is like a desert’s yearning for rain. Nurturing those locks means more than simple hydration; it’s about nurturing and sealing in that vital moisture.

Now, let’s talk overload – protein and moisture, the double-edged swords. They require tailored tactics and personalized product picks, like a bespoke suit for your curls.

The journey begins with cleansing – removing residue and reviving your hair’s essence.

When it comes to moisture, three key steps play a role:

  1. Cleansing: Refreshing your hair’s canvas.
  2. Conditioning: Providing a cocoon of hydration.
  3. Deep Conditioning: Pampering your strands with replenishment.

Determining the moisture frequency is key, whether it’s a daily or weekly ritual, tailored to your hair’s unique needs.

Infographic listing about moisture protein balance - Protein Deficient.

Here’s a straightforward method to restoring balance to over-moisturized hair:

  • Depending on the severity of the concern, you might need to repeat this process several times. It took several weeks for my hair to restore back to balance.
  • You’ll know the balance is restored when your hair feels more resilient, manageable, and less prone to breakage.

Restoring Balance to Hair Excessively Loaded with Protein

Oh, the lure of “hair repair” and reconstructing treatments – those protein-based marvels that promise strength! But hold on, because like a buffet gone wild, overindulgence can lead to an unexpected fallout: “protein overload.”

You see, proteins aren’t just building blocks; they’re clingy companions that latch onto your hair’s cuticle and cortex. They mean well, aiming to bolster your hair’s fortitude. But when they party hard, it’s your locks that can end up hungover – brittle, thirsty, and breakage-prone.

So, what’s the remedy for this hair fiasco?

It’s a process that’s like a dance between tangled partners – delicate and meticulous. Imagine these proteins locked in a waltz with your hair’s cuticle, needing multiple washes to gracefully part ways.

Now, let’s talk about hair that’s missing the moisture boat. It’s like a desert begging for rain. It feels coarse, straw-like, and its elasticity? Well, it’s taken a vacation.

Hold up, though! Protein isn’t the enemy. It’s like the muscle in a buddy duo – vital but best in moderation. You see, while protein fortifies, an overdose can lead to Sahara-like dryness.

Now, when do you summon the protein cavalry? It’s like a rescue mission:

  1. If your hair’s been through the works – relaxers, heat styling, colors, bleach – extra protein might just save the day.
  2. Damaged hair? Protein’s your knight in shining armor.

But wait, there’s more! You don’t need a protein extravaganza. Sometimes, a gentle touch of protein, in the form of a leave-in conditioner, is all your hair craves.

And remember, if you’re not part of the color, chemicals, or heat styling club, your hair’s protein needs are on a lower register. So, strike the balance, walk the protein tightrope, and let your hair’s melody be one of strength and grace.

Infographic listing about moisture protein balance - Moisture Deficient.

Here’s a simple approach to reestablishing equilibrium in protein-overloaded hair:

  • When tackling protein overload, your focus should shift towards protein-free products that emphasize restoring your hair’s moisture balance.
  • An effective choice is a deep conditioner like the As I AM Hydration Elation, which delivers optimal hydration for your hair.
  • How will you know when the balance is restored? Your hair will feel noticeably more supple, manageable, and resilient, showing fewer signs of breakage.

The Pitfalls of Excess: Moisture Overload and Protein Overload

The old adage holds true even in the realm of hair care: an excess of anything can be detrimental. This principle particularly applies to the delicate balance of hair care regimens.

Excessive moisture can lead to unwelcome consequences, such as the swelling of hair fibers resulting in hygral fatigue.

Furthermore, an abundance of moisturizing agents can trigger an elevated uptake of moisture from the surroundings, culminating in frizz and a limp appearance.

This rings especially true for curly hair, as excessive moisture can disrupt its naturally buoyant texture, leading to a loss of bounce.

Equally significant is the potential for protein overload, a consequence of repeated and frequent application of protein treatments. In simpler terms, it involves introducing proteins to your hair when they are not required at a given moment.

Proteins, being polymeric molecules with substantial molecular weight, can accumulate on the hair shaft, inducing protein build-up.

This accumulation induces changes in the hair’s surface characteristics, rendering them stiff and unyielding.

Hair strands laden with an excess of protein become resistant to manageability and styling efforts.

Why Is My Hair Experiencing Breakage?

Image of hair breakage in a brush.

Picture your hair as a delicate balance between moisture and protein. Too much of one and too little of the other can spell trouble.

Breakage becomes the unwelcome guest when either moisture or protein deficiency takes center stage.

Let’s explore how their imbalance can lead to those frustrating snaps and splits.

Understanding Moisture Deficiency Breakage

Breakage due to moisture deficiency occurs when your hair lacks sufficient hydration either on a daily or weekly basis.

The moisture content of your hair can be compromised by:

  1. Heat Styling or Chemical Processes: Intense heat styling or chemical treatments can diminish the hair’s moisture levels.
  2. Hair Products: If your hair products primarily consist of minerals, lubricants, or oil-based ingredients, they might reduce the net moisture contribution, undermining your hair’s hydration.
  3. Insufficient Hydration: This type of breakage can also stem from inadequate hydration both internally (insufficient water intake) and externally (irregular moisturizing deep conditioning and daily moisturizing).

Understanding Protein Deficiency Breakage

Adding too much structure to the hair giver makes it rigid and reduces the elastic properties, leaving it brittle, feeling like straw and prone to breakage.

Providing excess protein beyond what’s required for a healthy balance can result in protein overload-induced breakage.

Essentially, this means your hair might be receiving more care from protein treatments than from moisture, culminating in this type of breakage.

The protein content of your hair can be compromised by:

  1. Excessive Use of Protein-Based Products: Overzealous use of products designed to repair and reconstruct hair with protein can tip the balance, leading to excess protein build-up.
  2. Frequent Heat Styling or Chemical Processes: Intense exposure to heat styling tools or chemical treatments can strip the hair of its protein content, making it vulnerable to breakage.
  3. Hair Products with Mineral or Oil-Based Ingredients: Products laden with minerals, lubricants, or oil-based components might hinder the hair’s ability to retain moisture, inadvertently reducing the net protein intake.
  4. Inadequate Protein Intake: A lack of sufficient dietary protein can impact the hair’s protein levels, potentially resulting in protein deficiency breakage.
  5. Improper Moisture Balance: An imbalance between moisture and protein treatments can lead to inadequate moisture levels, making the hair more susceptible to breakage.

The Wet Hair Assessment Test: What’s It Really Good For?

Image of curly girl stretching hair.

The Wet Hair Assessment Test serves as a valuable tool for assessing the health and needs of hair.

By evaluating the hair’s behavior, texture, and elasticity when wet, this test offers insights into its moisture and protein balance.

It helps identify whether the hair requires more moisture, protein, or a harmonious equilibrium of both, and is a proven strategy for determining the causes of breakage.

Evaluating healthy hair conditions can be executed on dry hair. However, for identifying the roots of hair breakage issues, assessing wet hair is paramount. The inherent strength and elasticity of wet hair amplify during this phase.

Capitalizing on the hair cleansing process, we promptly appraise and address hair condition, enabling us to apply the appropriate treatments, be it moisture or protein, to rectify identified deficiencies.

Here what to look for when your hair is wet:

  • Observe your hair’s sensations in its wet state closely.
  • Does it feel rigid, stretchy, or brittle?
  • Does it dry quickly in the air or require time to become fully wet?
  • Take note of any shedding or broken strands during the cleansing process.
  • Reflect on the volume of shed hair and the circumstances under which it occurred. This encompasses whether the hair was lost due to severe tangling or forceful detangling procedures.

Stop conducting the Wet Assessment Test (also known as the Hair Strand Test or Wet Stretch Test) if your hair isn’t encountering breakage.

Maintaining Balance and Preventing Overloading: Tips to Follow

  1. Begin with Trials: Before applying any product to your entire scalp, conduct a trial by closely observing how your hair responds to it.
  2. Embrace “Less is More”: Adhere to the principle that less product is often more beneficial. Apply products in small amounts, dividing your hair into smaller sections for precise application.
  3. Regular Clarifying Shampoo: Integrate regular use of a clarifying shampoo into your routine to eliminate potential overloading and build-up.
  4. Tame Styling Intensity: Exercise control over the use of harsh styling techniques, such as high-temperature blow drying and flat ironing. Minimize exposure to aggressive chemical treatments to safeguard the structural integrity of your hair.
  5. Maintain the Balance: Always bear in mind that your hair necessitates a harmonious blend of both moisture and protein. These two factors work in tandem, contributing to your hair’s overall health and vitality.


In the realm of hair care, the synergy between moisture and protein emerges as the cornerstone of vibrant, resilient tresses.

Moisture rejuvenates, while protein strengthens – an intricate dance we’ve explored. Yet, balance is our guiding star, as excessive measures can lead astray.

Through trials and precision, we’ve learned to nourish with finesse, embracing the mantra of “less is more.” Clarifying rituals and mindful styling fortify our approach, transcending hair types and backgrounds.

This journey isn’t just about understanding; it’s about applying wisdom. Thus, with moisture and protein as our allies, we embark on a path of perpetual care, nurturing our hair’s vitality and allure.


1. Wolfram, L. J., Human hair: A unique physicochemical composite. J. Am. Acad. Dermatol. 2003, 48 (6, Supplement 1), S106-S114.

2. Corbett, J. F., The Chemistry of Hair-care Products. Journal of the Society of Dyers and Colourists 1976, 92 (8), 285-303.

3. Barba, C.; Méndez, S.; Martí, M.; Parra, J. L.; Coderch, L., Water content of hair and nails. Thermochimica Acta 2009, 494 (1-2), 136-140.

4. Laurière, M.; Pecquet, C.; Bouchez-Mahiout, I.; Snégaroff, J.; Bayrou, O.; Raison-Peyron, N.; Vigan, M., Hydrolysed wheat proteins present in cosmetics can induce immediate hypersensitivities. Contact Dermatitis 2006, 54 (5), 283-289.

5. Neudahl, G. A., Proteins for conditioning hair and skin. In Conditioning Agents for Hair and Skin, Schueller, R.; Romanowski, P., Eds. Taylor & Francis: 1999; pp 139-166.


I had to listen to what my hair curls are finally ready to take in some moisture again!!!


- renee, Stylist Liaison

- renee, Stylist Liaison

“I truly couldn't have gotten through this without her knowledge, advice and support...after suffering from Hygral Fatigue and getting tons of advice @themestizamuse.”

“@themestizamuse: for ESSENTIAL information you will NEED TO KNOW in order to see results.”

See how easy the topics are to find on her page (a few posts screenshot)? There is no topic Verna hasn't covered.

- dominique P, wavy hair enthusiast


- dominique P, wavy hair enthusiast

“I have learned a whole heap of knowledge from @themestizamuse.”

Inspiring hair tutor, grateful for what she offers the Curly Community in authenticity, passion, and knowledge.

- zoe F, Producer & Host of The Curl Squad


- zoe F, Producer & Host of The Curl Squad

“I was so excited to embrace my curls and take better care of them. As I started to dive in, I immediately became overwhelmed with the information.”

I read books and tried doing things because "that's what I'm supposed to do," but it didn't always work and I didn't understand why. I'm so grateful for Verna and her blog. Her info. actually helped me understand more of the science of why some methods helped and what products or ingredients to use and why. Anyone that compliments my hair and wants to start a curly journey, I tell them to start here. My hair is so much healthier and I'm so happy with it.

- stephanie, Curly hair enthusiast


- stephanie, Curly hair enthusiast

Our Manifesto

“One day you will wake up and there won't be any more time to do the things you've always wanted. Do it now”

- Paulo coelho

Skip to content