Crochet hair extensions are a type of hair extension that is installed using a crochet needle to weave pre-made extensions into the natural hair. This technique involves creating small braids or cornrows on the scalp and then using a crochet needle to loop the extensions through the braids.

Crochet tools are specially designed needles used to install crochet hair extensions. There are several types of crochet needles, including latch hook needles, interlocking needles, and double-ended needles. Latch hook needles are the most commonly used type of crochet needle, as they are easy to use and widely available.

In addition to crochet needles, there are also several accessories that can be used for crochet hair extensions, including:

1. Crochet hair thread: This is a type of thread that is used to secure the extensions to the natural hair.

2. Hair clips: These can be used to hold the natural hair in place while installing the extensions.

3. Edge control: This is a type of styling product that can be used to smooth down the edges of the natural hairline and keep them in place while installing the extensions.

4. Hair ties: These can be used to secure the natural hair and extensions in place while installing the extensions.

Overall, crochet hair extensions are a versatile and low-maintenance hairstyle that can help to protect the natural hair from damage and breakage. With the right tools and accessories, it is possible to achieve a wide variety of styles with crochet hair extensions.