ChaViv Keratin Bond Hair Extensions in Darkest Brown #2 are crafted for perfection. Each 25-strand set, available in 18", 20", 22", 24", and 26", uses high-quality keratin glue for attachment, offering a lasting wear of 3 to 5 months. These single-use extensions ensure your hairstyle remains flawless and durable without the option for reuse.