Have you ever seen a pair of lips that were THE PERFECT COLOR YOU’VE BEEN LOOKING FOR and asked about the lipstick, then tried said lipstick and it looked completely different!"
I sure have.
One lip color can look drastically different on one mouth compared to the next.

Here are the main reasons why:
1. There is a WIDE range between natural lip colors.

Even very opaque lipsticks can be altered by the color you are beginning with on the lips.They can range to almost skin color to dark purple to ruby red even in their barest state. So if you saw the most gorgeous color and she told you she’s wearing something that turns out to be mostly sheer you can bet it won’t look the same on you. She’s got genes to blame for that rather than lipstick:) 2. Skin tone also changes everything!

Put a bubblegum pink lip on a porcelain face and you might get the sweetest pop of powder pink. Put it on a tan or ethnic beauty and you’ve got a glow in the dark avantgarde look. As well are well aware the color surrounding a color is what gives it context. A true red on one woman might be full throttle orange on another.
3. Lip shape has a part too.

As if it wasn’t individual enough as it is there’s also the issue of lip shape at play here. For instance a single shade nude lipstick might look perfect on a pair of puckers that is naturally “pouty” and sticks out from the face because it creates a shadow therefore differentiating the nude ...