The number of packs of passion twist hair needed for a crochet hairstyle typically depends on the desired volume, length, and thickness of the twists. Generally, for a full head of medium-length
passion twists, you will need around 6 to 8 packs. If you prefer a fuller look or longer twists, you might require more, ranging from 8 to 10 packs.
The actual number can range based on the specific brand of hair, as some packs contain more strands than others. Additionally, the density of your natural hair and the size of the twists (larger twists require fewer packs, while smaller twists need more) will also influence the amount needed. It's always a good idea to consult with your stylist for a more precise estimate based on your hair type and desired style, but having 6 to 8 packs on hand is a common recommendation for most standard passion twist styles.