Coily hair, care that respects the coil
Type 4 coily and kinky hair is not simply straight hair with more curl added, and it is not just "very curly." It is its own texture with its own rules, and those rules matter because the popular routines written for looser hair will often leave it dry, tangled, and breaking. If you have landed here because most curly advice never quite fit, that instinct was correct.
Two physical facts drive almost everything about how coily hair should be cared for. First, the strand is tightly coiled, sometimes bending back on itself in sharp turns, which makes it very hard for the natural oil from your scalp to travel down the length of the hair. That is why type 4 is naturally the driest and most fragile texture, and why every bend in the coil is a stress point where the strand can snap under tension (Campus.edu, "What is coily hair"). Second, the cuticle on coily hair is often highly porous, meaning it lets water in quickly but also lets it leave quickly, so hydration that was there this morning can be gone by afternoon (L'Oréal Paris, caring for 4C hair).
Hold those two facts, dryness and fast moisture loss, and the rest of this page will make sense. If you are not sure you are type 4, start with the two-minute quiz and confirm it with the at-home test. This page assumes nothing and does not diagnose. It gives you a starting point.
Moisture is the whole game, and it must be layered and sealed
For most textures, moisture is one part of the routine. For coily hair it is the routine. Because water leaves porous coils so fast, a single leave-in cream on its own often is not enough. The fix is to apply hydration in layers, in a deliberate order, so each layer helps hold the next one in.
The method most often recommended for this is the LOC method, which stands for Liquid, Oil, Cream. You apply them in that order: a water-based liquid or leave-in first to actually add moisture, then an oil to slow how fast that water escapes, then a cream to seal everything down and give hold (Campus.edu on the LOC method). The idea is simple: water hydrates, oil is the barrier that traps it, cream locks the whole thing in place.
Some hair does better with the order flipped to LCO, which is Liquid, Cream, Oil. Here the cream goes on before the oil, so the oil forms the final outer seal over everything. Which one works better depends on your porosity and how heavy your products are. Very porous, thirsty hair often prefers oil closer to the end as the outermost seal, so it is worth trying both and watching which one keeps your hair soft longer (Carol's Daughter on LOC and LCO).
Wash less, moisturize more
Because coily hair is already starved for oil, frequent shampooing works against it. The American Academy of Dermatology suggests that people with tightly coiled hair wash it roughly once a week or every other week, rather than daily or every few days, precisely to avoid stripping the little natural oil the strand has (systematic review of textured-hair care practices, PMC).
This is also where the richer end of the product shelf belongs. Butters, thick creams, and heavier leave-ins that would flatten wavy hair are usually a good match for coily hair. The thing to understand is the trade-off: for type 4, being weighed down is a far smaller risk than drying out. If you are choosing between too light and too rich, too rich is usually the safer mistake here.
For most textures the fear is heaviness. For coily hair the real enemy is dryness. Choose products with that in mind.
A typical wash day
There is no single correct routine, and you should adjust based on what your hair tells you. But a full wash day for coily hair usually moves through these stages in order. It takes time, which is one reason washing weekly rather than daily makes sense.
Pre-poo
Before shampoo, work an oil or conditioner through dry or damp hair to protect it from the drying effect of cleansing and to loosen tangles before water even touches it.
Cleanse
Wash gently, focusing on the scalp. Use a mild shampoo or a co-wash if a full shampoo leaves your hair squeaky and stripped.
Detangle gently, while wet
Detangle only when the hair is wet and slippery with conditioner, working in small sections from the ends up toward the roots, using your fingers or a wide-tooth comb. Never dry-comb coily hair and never rush it. This is where most breakage happens.
Condition
A regular rinse-out conditioner to soften and add slip after cleansing.
Deep condition
A richer treatment left on longer, ideally with gentle warmth, to genuinely soak moisture into porous strands. For type 4 this is a core step, not an occasional luxury.
Leave-in
Apply a water-based leave-in to hair that is still damp. This is the "liquid" your seal will lock in.
Seal with LOC or LCO
Layer your oil and cream in the order that works for your hair, section by section, so the moisture you just added stays put.
Between wash days, coily hair still needs attention. A light daily re-moisturizing with a simple water-and-oil spritz keeps the strands supple so they bend instead of snap. And at night, protect the hair from friction, which is a real and avoidable cause of breakage. A satin or silk bonnet, or a satin pillowcase, lets the hair slide instead of catching and roughing up against cotton while you sleep.
4a, 4b, and 4c: a starting point, not a label to live inside
What actually separates 4a, 4b, and 4c
Within type 4 there is a lot of range, and it helps to know roughly where you sit because it changes how much definition to expect and how much shrinkage to plan for.
- 4a is soft, tightly wound coils with a clear S shape that you can see when you stretch a strand out. It tends to hold definition more readily than the rest of type 4.
- 4b bends in sharp zig-zags rather than rounded coils, less of an S and more of a Z. It reads as fluffy and voluminous, and the tight bends make it prone to catching on itself.
- 4c is the tightest coil of all, with little visible definition until you stretch it, and it can shrink dramatically, often showing only 25 to 50 percent of its true length, sometimes shrinking 50 to 75 percent (L'Oréal Paris, 4C hair). Shrinkage is a sign of healthy, springy hair, not a problem to fix.
Most people have more than one pattern on their own head, and mixed patterns across the crown, edges, and nape are completely normal. Treat this as a rough map for choosing products and expectations, not a diagnosis and not an identity.
Why this hair was underserved for so long
There is an honest reason coily hair gets shortchanged in most curly content, and it is worth naming.
The original Andre Walker hair typing system, which is where the whole "type 2, 3, 4" language comes from, did not even include a 4C category. The tightest coil texture was left off the chart entirely.
When the most tightly coiled hair is missing from the founding framework, it is no surprise that products, tutorials, and advice were built for everyone else first and this hair last. That gap is exactly why coily hair gets its own full page here, written for it directly, rather than a paragraph tacked onto the end of a curly guide.
Where to go next
Product names matter less than understanding what the ingredients actually do, so read ingredients in plain English to learn what butters, oils, humectants, and proteins are really doing in your leave-in and your seal. And if you are building a routine from scratch and want the short version of your first week, go to start here.
Educational, not medical advice. If you have scalp irritation, sudden shedding, or hair loss, please see a dermatologist or trichologist.