Thin Lips

Lips thin in two different situations and the distinction matters more than most people expect. Some lips have always been thin, which is genetic and is a question of building something that was never there. Others have thinned over time, which is a question of restoring something that has been lost. The techniques differ, and so does what a good result looks like.

Sam Assassa, MD is a certified educator for the International Academy of Aesthetics and has taught injectable technique to physicians and nurses in more than 15 countries. He founded Beverly Hills Aesthetics in 1995 and is board certified in Internal Medicine.

What Happens to Lips With Age

Several changes occur together and each contributes to the same impression.

Volume decreases. The soft tissue of the lip loses fullness, and the red portion becomes narrower.

The border softens. The vermillion border, the defined edge between lip and skin, becomes less distinct, which alone can make a lip look considerably less defined even at the same volume.

The upper lip lengthens. The distance between nose and lip increases over the years, so the upper lip rolls inward and less of it shows.

Vertical lines form. Fine lines above the lip deepen from repeated movement, sun exposure, and thinning skin, and they blur the edge further.

The corners turn down. The muscle at the corner of the mouth continues pulling while the tissue around it loses support.

Genetically thin lips are a different situation. Nothing has been lost, so the goal is proportion rather than restoration, and how much a particular face can carry is the governing question.

What Actually Bothers You Is Worth Identifying

Patients often say they want fuller lips when the real complaint is something more specific.

• Volume, meaning the lip itself is too small in proportion to the face
• Definition, meaning the edge has blurred and the shape has lost its outline
• Asymmetry, between left and right or between upper and lower
• Lines, meaning the fine vertical creases above the lip
• The smile, where the upper lip disappears entirely when you smile

Each is treated differently, and volume is not the answer to most of them.

How Thin Lips Are Treated

• Volume and shape: lip enhancement with hyaluronic acid filler, which is reversible if the result is not what you wanted.
• When the lip vanishes as you smile: a lip flip relaxes the muscle so the upper lip rolls slightly outward, adding no volume at all.
• Vertical lip lines: resurfacing or microneedling addresses the skin, which filler cannot.
• Downturned corners: the smile lift addresses corner position specifically.
• Structural length: where the upper lip is anatomically long, a surgical lip lift changes what filler cannot.

The Ceiling Nobody Mentions

Every lip has a limit before it stops looking like a lip, and it is set by your own anatomy rather than by how many syringes you are willing to buy. Going past it is what produces the results people recognise instantly.

The approach here is to build gradually across visits rather than place a large volume at once, which means leaving a first appointment wanting slightly more. That is intentional. Adding is far easier than correcting.

Have Your Lips Assessed in Beverly Hills

Dr. Assassa will look at your lips in proportion to the rest of your face and tell you what is realistic. Request a consultation or schedule your appointment online.

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