Yes, a Type 4D hair is recognized within natural hair communities as an extension of the standard Type 4 (coily/kinky) classification, representing the tightest, most densely packed coils, often with a distinct Z-shape or L-pattern, needing intense moisture and gentle care. While the standard system stops at 4C, Type 4D describes ultra-tight coily hair that's very fragile, absorbs moisture poorly, and requires specific routines.
In addition, there is type 4d hair. This specific type of glorious hair is precisely afro textured but unlike the other type 4 hair, it has more of a Z structure and sometimes an L pattern.
The rarest hair type is generally considered Type 1A, which is extremely fine, straight, and wispy, lacking any natural bends or waves, making it difficult to hold a curl but naturally sleek and prone to oiliness. While curly hair types (Type 3 & 4) are less common globally, 1A stands out as the least voluminous and textured straight hair, often seen in people of East Asian descent, though it's considered rare across all populations due to its unique fineness.
What Afro Hair Do
Type 5c hair texture has the tightest curl pattern among the other types. It forms a distinct “Z” shape and has a coarser texture. This hair type is often densely packed. Also, it requires extra care to maintain moisture and prevent breakage.
Because it is extremely fine, absolutely straight, and lacks any natural curl or wave, it is uncommon in most populations. Although they may be less common globally, tightly coiled hair types, such as Type 4C, are common among specific ethnic groups, therefore they cannot be considered the rarest hair type in general.
The rarest hair type is generally considered Type 1A (ultra-straight, very fine hair), common among East Asians but rare globally, while the rarest hair color is natural red, found in only 1-2% of people, with the rarest combination being red hair and blue eyes, notes Readers' Digest and Gusto Hair. Extremely tight curl patterns (like some Type 4C) combined with other rare features (like white-blond) are also exceptionally uncommon, according to Hair Restoration Seattle.
Fine hair is the most fragile of the hair texture types as the individual strands of hair are very thin. This texture type may not hold style well and it will likely get oily easily. A common need for fine haired folks is more volume, but too much product will weigh the hair down and ultimately cause breakage.
In haircuts, numbers 1, 2, 3, 4, and 5 refer to clipper guard sizes, which are plastic attachments that control hair length; the higher the number, the longer the hair. A #1 is about 1/8 inch, #2 is 1/4 inch, #3 is 3/8 inch, #4 is 1/2 inch, and #5 is 5/8 inch, with each number leaving progressively more hair for fades, buzz cuts, and other styles.
In straight type, thin hair was judged most attractive, whereas in wavy type, hair with mean diameter received the highest attractiveness judgments. In conclusion, there was considerable variation in age, health and attractiveness perception of hair with regard to effects of hair diameter, type, and color.
Long scalp hair is likely to have evolved first as long, tightly curled hair for better thermoregulation and was further selected at a later point in human evolution owing to its unique social communication functions.
Asian hair is the thickest, with a larger diameter of about 70 µm. Caucasian hair has an average diameter of 65 µm, and African hair is the finest, with a diameter of 55 µm. The cross-section of Asian hair is the most round and uniform, Caucasian hair has an elliptical shape, and African hair has a flattened shape.
Type 1A is the rarest hair type and is stick-straight without even a hint of a wave.
Breakage. Type 4 hair is incredibly fragile as the strands themselves are quite thin, and the tight shape makes them more prone to snapping on the bends.
4C Hair Pattern
Curl Pattern: Very tightly coiled or zig-zag; curl definition is minimal without manipulation. Texture: Can be fine, soft, or coarse and is usually densely packed. Shrinkage: The most shrinkage of all types—up to 75% or more. Key Characteristics: Fragile and highly prone to breakage.
Fine Hair Texture
Fine hair is the most fragile texture. It's easy to blow out and straighten, but doesn't hold a style well, tangles easily, and is more susceptible to damage and breakage. It is also incredibly soft and silky!
Over-moisturized hair looks limp, mushy, and lacks definition, with curls falling flat or becoming undefined and fluffy, feeling heavy and overly soft, lacking bounce and elasticity, and sometimes appearing stringy or greasy at the roots, indicating a protein-moisture imbalance.
In a study conducted in 2010, researchers tracked 800 healthy women over the course of six years. The analysis concluded that the subjects lost the most hair from September through November. Follicles enter a resting phase, or “telogen” state, more frequently in the middle of summer.
The rarest eye colors are often cited as violet/red (due to albinism or light scattering) and green, found in only about 2% of the global population, though some sources also put grey or heterochromia (different colored eyes) as extremely rare, often less than 1%. While green is the rarest natural pigment-based color, truly unique shades like violet (often an optical effect with albinism) and conditions like heterochromia are exceptionally uncommon.
Red hair is the rarest natural hair color in humans. The non-tanning skin associated with red hair may have been advantageous in far-northern climates where sunlight is scarce.
4C hair is characterised by tightly coiled strands with minimal curl definition, and it's most common among people of African descent. While texture diversity exists in all populations, true 4C hair is extremely uncommon in white individuals.
causes of 4C hair thinning:
always flat ironing your hair and using curl wands. this causes the hair to become dry and brittle, leading to breakage and thinning. chemical damage: creamy crack and hair dyes can also cause 4C hair to become thin and weak.
Type and texture
As the follicle shrinks with age, the shape can also slightly change. Damage due to environmental factors and chemicals may also affect follicles and their shapes. How silky or coarse your hair is can also change with age. Sometimes texture changes because of hair thinning.