My hair isn’t particularly long or thick, so when I want the look of a full hair bun, I use a bun form. Bun forms (also known as donuts or rats) can be made with a sock or a stocking, but I prefer a store-bought, nylon mesh form. Here’s how I use it:
I am using a Conair Bun Maker form
(This technique works well for short to medium length hair. If your hair is longer, check out some of the sock bun hair tutorials on youtube which instruct you to roll your hair around the form or to use the extra hair for a wrap-around braid. My hair isn't quite long enough for those iterations.)
I use the form with side buns:
But employ my not-so-messy bun technique for buns on top of my head:
The form results in a denser bun, while the not-so-messy bun technique (essentially the same steps that I use with the form, only without the filler) looks more airy and casual.
Once complete, both buns can be tugged and adjusted to create a bigger and less regular look.