A hairpin is a hand tool with a thin, long shaft, usually with a slightly bent tip. At the tip of hairpins, there is a section which is round or looped, following the bent part. This section may vary according to the intended use of the hairpin. Hairpins are generally made of metal or plastic materials. They have various uses: Sewing and Embroidery: Hairpins are used in sewing and embroidery to pin down, adjust, or position fabrics. They are particularly used in sewing to bring fabric layers together or to prevent fabric from slipping during stitching. Hair Accessories: Hairpins are accessories used to gather or style hair. In hairstyles like buns or braids, they help in securing the hair in the desired shape. Crochet and Knitting: When crocheting or knitting, hairpins can be used to facilitate or correct the knitting work. For instance, if a mistake is made in knitting or if stitches are lost, a hairpin can be used to correct the mistake or recover the stitches. Packaging and Decoration: Hairpins can be used to hold together paper, fabric, or other materials or for decorative purposes. For example, they can be used to embellish gift packages or for decorative arrangements. Hairpins come in different sizes and types. Pinned hairpins are used in sewing and embroidery, whereas flat-tip hairpins can be utilized for more general purposes. The design of hairpins may vary depending on the intended use and personal preferences.