I have this primer in "clear".
To be completely honest, the only reason I bought it was because I needed a primer but didn't want to pay very much. I wasn't bothered about whether or not it would work well.
However, I was pleasantly surprised! The formula feels smooth on my face - almost like velvet, and it does a pretty good job of keeping my makeup where it is supposed to be!
For the price, it is definitely worth a go!
I purchased the green (anti-redness) primer from this line but found it didn't do much for me. It didn't reduce my redness much at all and felt rather heavy and greasy on my face. It did create a smooth surface for my foundation and it did look flawless but I didn't like the feeling and it caused me to breakout so will probably give it to a friend to try and will not be repurchasing.