Is a scarless lip lift possible as I saw claims that 100% of the scar can be hidden in the upper lip?

There are surgical and non-surgical approaches to lip augmentation. Non-surgical approaches include botox (slight lift, reducing gum show) and filler (volume restoration). Surgically, you can have two separate incisions under the nose (italian), one incision under the nose (bull horn), one incision at the red/white upper lip junction (gull wing) or two separate incision at the corners, or a combination, depending on your desired look and anatomy. My preferred surgical technique is called the Elelyft, which is a version of the bullhorn approach. The ideal candidate for the Elelyft, or upper lip lift, is someone with a philtral length of 13mm or longer, no upper dental show, and/or a thin upper lip. The nasal base to mouth width ratio needs to be taken into consideration to avoid leaving the lip corners down.

In your situation, there is no such thing as a scarless lip lift that gives an sort of longevity in result. While you can hide part of the incision in the nostril, you destroy the nasal sill in doing so and create an unnatural appearance.

Consult with an experienced lip surgeon for a complete range of options that are appropriate for your situation.

Gary Linkov, MD
Lip Specialist / RealSelf Lip Lift Medical Reviewer
Manhattan

M type lip lift will not leave a noticeable scar. The only part that is outside is a fine line where the columella meets the lip. The bullhorn can leave a very bad scar outside the ala!