1A, 1B, 1C: Lacks natural curl, ranging from fine and thin (1A) to coarse and straight (1C). It is often shiny but prone to oiliness.
2A, 2B, 2C: Features an "S" shape pattern, ranging from loose, thin waves (2A) to more defined, thicker waves (2C). It is prone to frizz.
3A, 3B, 3C: Ranges from loose, shiny curls (3A) to tight, voluminous corkscrews (3C). It has a clear, defined loop pattern
4A, 4B, 4C: Characterized by very tight, small coils, "Z" shaped patterns, and significant shrinkage. 4C hair is the most delicate and densely packed.