This hair type could be either tightly coiled or a zig-zag pattern with a cotton-like feel. Type 4a hair has a clearly visible curl and wave pattern that ranges from pen size curls to pen spring size coils. Type 4b hair has a tighter wave pattern and kinks of various size.Type 4 hair absorbs moisture and is susceptible to frizz and shrinkage. For Type 4 hair, creams and butters work best. Sleeping on a satin pillowcase or with a satin scarf or sleepcap is recommended to reduce tangles.