By: Kaylabé Natural Cosmetic Products
LOC or LCO: What if the real question lies elsewhere?
You have been applying the LOC method for months, and yet your 4C hair remains dry the very next day. Frustrating, isn't it? You are not alone.
Here is the truth that we observe every day at Kaylabé: LOC and LCO are not rules set in stone. They are adaptable layering structures, popularized in the African-American community, notably by author Chicoro in her book on natural hair.
The real question is therefore not "LOC or LCO?", but rather: which one matches my porosity, my climate, and my products? In this article, we break it all down: porosity, product textures, seasonal adaptation, and a complete routine to finally retain moisture in your 4C hair.
Understanding the LOC and LCO methods in 2 minutes
The LOC method consists of layering three layers in this order: Liquid (water or hair tea), then Oil, then Cream. Each layer has a specific role: water hydrates, oil seals, and the cream locks it all in.
The LCO method reverses the last two steps: Liquid, then Cream, then Oil. In this variation, the cream penetrates the fiber before the oil comes to seal the surface. Some people achieve more softness and definition this way.
Why are these methods so important for 4C hair? Because the very tight Z-pattern structure of this hair type prevents natural sebum from traveling down the fiber. The result: your hair is structurally drier than any other type.
The goal of both methods is identical: to maximize the moisture retention time. It is not just about wetting your hair, but about keeping the water inside the hair fiber for as long as possible. Both paths lead to the same goal, but the right path depends on the unique structure of your hair.
Porosity: the deciding factor everyone ignores
Porosity is the ability of your hair's cuticle to absorb and retain moisture. It is the number one factor that determines whether LOC or LCO will work for you, and yet it is the one that most people ignore.
High porosity: your cuticles are raised. Water enters the fiber easily, but it comes out just as quickly. That is why the LOC method is generally recommended: the oil applied right after the liquid quickly seals in moisture before it evaporates, then the cream strengthens this barrier.
Low porosity: your cuticles are very tight. Water penetrates with difficulty. In this case, the LCO method is often preferable, as applying the oil last avoids blocking moisture absorption too early in the process.
What influences your porosity? Genetic factors play a significant role. A 2020 study conducted by UCLA identified genes associated with cuticle structure and lipid production in African-American women. Repeated chemical treatments and excessive heat also significantly increase porosity (Evans, Journal of Cosmetic Science, 2008).
Practical test to identify your porosity: take a clean strand of hair (without products) and drop it into a glass of water. Wait 2 to 4 minutes. If it floats on the surface, your porosity is low. If it sinks quickly to the bottom, it is high. If it stays in the middle, it is medium.
At Kaylabé, we observe it regularly: most failures with LOC or LCO come from not knowing one's own porosity. Before changing methods, start with this simple test.
The texture of your products: the detail that makes everything fail
You can have the right method and still get disappointing results. Why? Because the compatibility of your product textures makes all the difference.
Let's start with oils. There are two main categories. Penetrating oils (coconut, avocado, olive) cross the cuticle and nourish the fiber from the inside. Film-forming oils (castor, shea) remain on the surface and create a protective film. If you use a film-forming oil in step 2 of a LOC method on low-porosity hair, you risk blocking all absorption. The choice of oil must match your method and your porosity.
As for leave-ins, watch out for extremes. A leave-in that is too watery, without glycerin or aloe vera, will not provide enough hydration. A leave-in that is too heavy will weigh down your hair without truly hydrating it. Always check that water is listed as the first ingredient on the label: a product without real water simply cannot hydrate.
The pH of your products also matters. Products formulated at a pH between 4.5 and 5.5 promote the temporary opening of cuticles and improve the penetration of active ingredients. This is one of the principles of the hair "skinification" trend: integrating active ingredients like hyaluronic acid, glycerin, and aloe vera to boost moisture retention in LOC or LCO steps.
Final practical tip, and it is essential: always section your 4C hair before applying your products. With dense hair, working without sections prevents uniform coverage. Every strand deserves to receive its dose of hydration.
Adapting your method to the seasons
Your 4C hair reacts like a living fiber to weather conditions. This is an aspect very rarely addressed in French-language content, and yet it changes everything.
In winter in Canada or Europe, the air is dry and cold. Ambient humidity drops, and your hair loses its water more quickly. The LOC method is often more effective in this context, because the strong sealing with oil before the cream limits evaporation into the dry air.
In summer, when humidity is high, the LCO method is generally lighter and more stable. It avoids the heavy and sticky effect that cream applied over oil can cause in a humid environment.
Our advice: keep a hair journal. Note the method used, the season, the products, and the results obtained. In a few weeks, you will identify your own climate response. Our French-speaking clients in Canada, Europe, and the United States live very different climatic realities. What works in Montreal in January will not produce the same results in Paris in July.
LOC/LCO: a maintenance step, not a miracle solution
This is one of the most important lessons we share at Kaylabé: the LOC or LCO method, no matter how well applied, is only a maintenance step. It cannot compensate for missing foundations.
When a client tells us "LOC doesn't work on my hair," here is what we most often observe: the hair was already dehydrated before the routine, the products used did not contain enough real water, or the hair was not properly sectioned. These are not method failures; these are preparation problems.
The essential foundations of a complete routine include a gentle shampoo to cleanse without stripping, prior hydrating detangling to limit breakage, and a deep conditioning treatment under heat for 20 minutes a week to nourish the fiber deeply. According to specialists' recommendations, these steps are essential even before thinking about layering.
For low-porosity hair, use steam or a heating cap before applying your products. This temporarily opens the cuticles and allows moisture to actually penetrate the fiber.
Let's recall an important fact: your 4C hair grows like all other types, i.e., about 0.9 cm per month. It is not the growth that is the problem, it is the breakage that prevents length retention. A regular LOC or LCO routine over 2 to 4 weeks can significantly reduce breakage and visibly improve hydration, according to a specialized guide.
And don't forget the last link in the chain: nighttime protection with a satin bonnet. Without it, all the sealing work of the day can evaporate during the night.
How to choose between LOC and LCO: your guide in 4 questions
To simplify your choice, ask yourself these four questions:
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What is my porosity? (Take the glass of water test.)
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What is my current climate? (Dry or humid air?)
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Do my products contain real water? (Water must be the first ingredient.)
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Does my routine include a regular deep treatment? (Weekly deep conditioning.)
In summary: high porosity + dry winter = LOC. Low porosity + humid summer = LCO. But every head of hair is unique. Test your method for 2 to 4 weeks before concluding that it "doesn't work."
Be aware that according to a survey published by Maddyness, 73% of Afro women in France declare that they have trouble finding products adapted to their needs. And according to Mintel (2025), type 4 consumers feel that the offer remains insufficient for their specific needs. Knowing your porosity is the very first step toward a routine that really works.
Remember this: there is no wrong method, there is only a method poorly adapted to your unique hair profile. The best method is the one that matches your porosity, is adapted to your climate, uses products compatible with each other, and is part of a complete routine. You have all the keys in hand to find yours.
