I've purchased and tested many, many toners, but it wasn't until I came across this NARS toner that I really saw results. Ultimately what works for my skin is the fact that it is not too "harsh" for my skin type. Personally I saw results in brighter, younger looking skin after a solid month of use.
My only tip when applying this product is to just pump a bit of the product directly onto clean hands and pat/press into your face and neck. I'm not a big fan of using cotton pads to apply toner as it stands.