Most of these methods result in an increase in the amount of vermilion visible , but so far , quantitative data exists only for the V - Y lip augmentation , for which statistically significant increases in upper vermilion height and surface area have been measured .
Most of these methods result in an increase in the amount of vermilion visible . 
 Quantitative data exists for the V - Y lip augmentation , for which statistically significant increases in upper vermilion height and surface area have been measured .