“You always want extensions for length or thickness since that is where they are often extending from and that’s where the blending takes place,” she states. After the hair is straightened or blown out, the hairstylist will then “sandwich” The 2 wefts of extensions with the client’s hair in between. https://allhealthmarket.com/product/hair-extensions-wigs/hair-braids/22deep-wave-crochet-hair-synthetic-passion-twist-braiding-hair-extension-afro-curls-water-wave-deep/