I adore Yello-Out for its yellow stain neutralizing abilities, but I absolutely loathe how it chips & peels almost instantly. Expose your hands to water & forget it, polish peels off!
Otherwise I still love it, & I still use it on a regular basis. It's a transparent lavender-tinted polish that neutralizes the appearance of yellow stains in nails & REMOVES them! When I remove the polish from my previously yellowed nails, they are fresh & healthy looking.
Topping this with a layer of sheer white nailpolish results in the most gorgeous manicure. But it doesn't last. So I have to re-do my manicure frequently.
By itself, this polish makes nail beds look pink & healthy and nail tips look clean & white. Only about $3 in drugstores.
UPDT 3/22/11 -
The bottle is the same but the formula has changed (the purple tint is more intense in the bottle - you can see the difference in the photos above - old vs. new). Now it dries matte rather than shiny (I guess to give a more natural look) which I don't really like - it makes my nails look like they have no polish on (no shine), except for the improvement in nail color appearance (healthy nails instead of dull or yellow). New formula notwithstanding, unfortunately this polish still begins to peel after a bit of water exposure, whether I'm wearing it by itself or underneath other nailpolish (even more so). So no improvement there, but I still depend on this product.