Here's what I think: People, thus far, are not wrong about the spin pins - I can see why people like them. I don't, however, think that they're SO amazing. Maybe they were just hyped up? Or maybe I need to get used to them. They hold hair up just fine and they're infinitely easier to use and more secure than the 20 bobby pins they supposedly replace, but there are a couple limitations.
- They loosen after a while, depending on how well you screw them in. If you make a really tight bun they'll stay in longer.
- This is true of most buns, but on straight Asian hair the ends don't always lay flat and sometimes (awkwardly) fan out. You may need a few extra bobby pins to help you deal with the ends. If you don't want to use more bobby pins, give your hair some texture (curling/crimping/waving) and it'll cooperate better.
- For anyone with really thin/really thick hair, these wouldn't work. I'd say if your pony tail is smaller than a nickel they'll show.
- I'm finding it a little difficult to control the shape of the bun and how it falls with stubborn/unruly hair
Other than that, a handy tool to have in your kit, especially if you just need a makeshift bun to serve as a base for an updo. Spin away!