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Thick hair tends to be especially strong, as it has more protein in its inner core (cortex) than fine hair, and it is this core that is responsible for hair’s strength. Thick hair tends to have a lot of natural volume, as the hair fibres are less flexible than fine fibres (CA; fibres). Thick hair also has many hairstyling options; its fibres (CA: fibres) are technically better able to twist than fine hair.

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