Application: A small section of your natural hair is threaded through a tiny, metal ring (the "nano" ring), and then the extension strand is also placed inside the ring. The ring is then tightened with a special tool to secure both the natural hair and the extension hair together.

Size: The "nano" in Nano rings refers to the size of the rings. They're much smaller than traditional micro rings, which means they're less noticeable and cause less tension on the natural hair. The rings are typically made of aluminum or copper.

Longevity: Nano ring extensions can last for several months with proper care. However, they will eventually need to be moved up as your natural hair grows. Depending on your hair growth rate, you might need to do this every 6–8 weeks.

Comfort and Maintenance: Because of their small size, nano rings tend to be more comfortable than some other types of extensions. They don’t require heat or glue for application, so they’re less damaging to the hair. However, they do need to be maintained regularly by a professional stylist, especially to ensure that the rings don’t slip out.

Pros:

Smaller rings are less noticeable.

No heat or glue required, reducing the risk of damage.

Suitable for all hair types, including fine hair, because they don’t add as much weight as other methods.

More comfortable and lightweight compared to other extensions.

Cons:

Can be more expensive due to the precision required in application.

The rings can be harder to remove, so you’ll need a professional to take them out.

If not applied or maintained properly, the extensions can slip.