Types of Hair Texture
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1A: The rarest type, very fine, straight like pins, and prone to oiliness.
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1B: Slightly thicker than 1A and has more volume.
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1C: Thick, straight, and coarse, easily becoming wavy in humid conditions.
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2A: Fine, thin, moisture-absorbing, perfect for styling.
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2B: Slightly rougher and denser than 2A, more prone to frizz.
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2C: Deep waves starting from the scalp, thicker than 2A and 2B.
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3A: Voluminous curls ranging from soft to tight.
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3B: Thick, curly texture with small to medium-sized curls and typically dense hair shaft.
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3C: Texturized, tight, and thick.
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4A: Greatest shrinkage and elasticity, very tight and small curls.
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4B: Undefined curl pattern, forming a "Z" shape.
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4C: The most fragile, tightly coiled and zig-zagging.
Growth of Hair
The period when hair grows the most is between the ages of 15 and 30. Growth slows between 40 and 50, stabilizing at 0.25 centimeters per month after 50. Average hair growth ranges between 0.5 centimeters and 1.5 centimeters per month.
Remy hair is characterized by aligned cuticles similar to natural hair, pleasant to touch, and smooth when brushed. On the other hand, non-Remy hair, common in randomly collected hair, has naturally misaligned cuticles, subjected to aggressive treatments weakening the hair. Roots and tips are mixed, leading to tangling. Non-Remy hair is not suitable for hair extensions.