I was very excited to try these the first time I saw them. I have very thick and quite long hair. I'm always putting my hair up in buns using elastics because bobby pins were WAY too much work and they always ended up getting stretched anyway. I also needed like 80-100 to even keep an updo in place.

I find these pins work great! I really do believe that they have the strength of 20 bobby pins. I don't mind the cost considering how well they work. They're about $6-7 but a pack of decent bobby pins (that you'll need to replace right away anyway if you try to do an updo with them) is the same price.

One thing I found I had to do was use 4 spin pins. I have too much hair and 2 just does not do it. Sometimes stray strands come out but I just pin those into the middle of the bun with regular bobby pins. But I think the more practice you have getting it right, the less you'd have to do this. I don't do the "spin" bun, I just scrunch my hair and screw them in there. They can work for a variety of styles! They also work better if I curl the ends of my hair first with a curling iron. My hair just cooperates a little bit more!

They also make your hair a little curly/wavy when you take them out so I'm sure if you used them after a shower you'd have great body and curls.

There is kind of a learning curve with these pins! It took me about 3-4 tries to figure out what works for my hair and what does not and I am still finding ways to perfect it as I go. But once you figure it out, it's easy and quick! Not to mention looks great.

All in all, I love Spin Pins because I can finally do a lovely updo for nights out, formals, weddings, etc with very little time and effort. I use them at least a couple times a week!

These were given to me as a gift, so I can't complain about the price!
The spin pins are hit and miss with me... I wish they had better directions how to use them effectively. I have long thick hair and still need to use bobbypins and elastic bands to hold my hair into place - oh, and also shellack it with copious amounts of STRONG holding hairspray. I really want to like these and use them, they seem so easy.
Maybe I'm using them wrong, or maybe they're not good for thick hair?
But, like I said, these are hit and miss. Some days I get my hair just right and they hold, but not for long.
I certainly won't recommend for thick-haired girls.