6D hair extensions have many advantages. Here are some reasons that 6D extensions have popularity. The pros are:

Low maintenance: 6D hair extensions are low maintenance. It gives you a minimum overhead cost without requiring a regular visit to the salon. You can take proper care from home.

Faster apply and remove: The process of the extension takes around 20 to 30 minutes which is faster compared to the other extension methods. The removal process is also easy as you need to pop the microbeads.

Long-lasting: 6D extensions last longer from four months to a maximum of a year. It depends on the quality of the hair and it stays longer according to other hair extensions. 

Not everything is perfect so 6D hair extensions may have some flaws but those are viable for any hair extension options. 

As it has so many positive sides, getting an extension done using this method can be a bit expensive compared to the other extensions. So, the cost can be a con but if you consider the quality and durability, it is worthy of the expanse.

The 6D hair extension machine grabs a little amount of hair at a time during application. This can be a little frustrating but it helps to ensure your hair is protected.