Marionette lines form because the fat, bone, and connective tissue that once held your lower face taut gradually lose volume and structural support. These vertical creases running from the corners of your mouth down toward your chin are one of the most visible signs of facial aging, and several overlapping factors determine how early and how deeply they appear.
What Creates the Lines
Your face stays smooth and lifted in youth thanks to a network of fat pads, retaining ligaments, and muscles working together like scaffolding. The fat pads in your lower face sit in distinct compartments separated by ligaments and muscles. As you age, these deep fat pads shrink and shift downward, a process called ptosis. The result is a visible crease where the structural fat used to provide support, particularly along the groove running from the corner of your mouth to the jawline.
A muscle called the depressor anguli oris plays a key role. It pulls the corners of your mouth downward every time you frown or make certain expressions. Over decades of use, combined with the loss of fat volume above it, this muscle’s downward pull becomes increasingly visible on the surface. The skin essentially drapes over the gap where volume used to be, forming the characteristic “puppet” lines.
Collagen Loss Starts Earlier Than You Think
Starting in early adulthood, your skin’s collagen production drops by about 1% to 1.5% per year. That sounds small, but it compounds. By your 40s, you may have lost 20% to 30% of the collagen you had at 20. Collagen is the protein that keeps skin firm and resilient, so as it depletes, your skin becomes thinner, less elastic, and less able to resist the pull of gravity and muscle movement beneath it. The lower face, where skin is already thinner than the cheeks, shows this loss early.
Smoking and Sun Exposure Are Major Accelerators
Genetics and natural aging account for a lot, but two controllable factors dramatically speed things up. In epidemiological research, heavy smoking increased the risk of facial wrinkle formation nearly sixfold compared to nonsmokers. Excessive sun exposure (more than two hours daily) roughly tripled the risk independently. When both habits occurred together, the risk of developing wrinkles was 11.4 times higher than in nonsmokers with less sun exposure at the same age. Smoking damages collagen from the inside by generating free radicals and reducing blood flow to the skin, while UV radiation breaks down both collagen and elastin fibers in the dermis.
Weight Loss Can Deepen Them Quickly
Rapid or significant weight loss is one of the fastest routes to more prominent marionette lines. When you lose a large amount of body fat, you also lose fat from the face, and the skin that stretched to accommodate that volume doesn’t always snap back. A systematic review of facial changes after bariatric surgery found that massive weight loss causes accelerated facial aging through fat loss and increased skin laxity. The midface lost the most volume (88% of patients showed significant changes in the midface and nasolabial folds), followed by the lower face and perioral area, where roughly 60% of patients experienced noticeable volume loss.
This same mechanism is behind what’s colloquially been called “Ozempic face.” With rapid fat loss from weight loss medications, wrinkles become more prominent and skin begins to sag along the jawline, marionette lines, and nasolabial folds. The younger your skin, the more resilient it tends to be, but even younger patients who lose weight quickly can notice these changes.
What Can Improve Them
Topical Treatments
Skincare products containing retinoids and peptides can make a measurable difference, particularly for mild to moderate lines. In a 16-week clinical trial, a serum combining a retinoid (hydroxypinacolone retinoate) with a 9.5% peptide blend produced statistically significant improvement in marionette lines. Interestingly, the topical serum outperformed fractional CO2 laser treatment for marionette lines specifically. Retinoids work by stimulating your skin to produce more collagen and turn over cells faster, while peptides act as signaling molecules that encourage repair. These products won’t eliminate deep lines, but consistent daily use over months can soften them noticeably.
Injectable Fillers
Hyaluronic acid fillers are the most common in-office treatment. A practitioner injects small amounts of gel-like filler to replace the volume that fat pads once provided. For marionette lines specifically, the typical volume is around 0.5 milliliters per side, though milder cases may need less. The filler physically lifts the skin from underneath, smoothing the crease. Results are immediate and generally last six to twelve months before the body gradually absorbs the filler, at which point you’d need a repeat treatment.
Muscle Relaxers
Botulinum toxin injections can target the muscle that pulls your mouth corners downward. By relaxing this muscle with a small dose (typically 2 to 3 units per injection point on each side), the corners of the mouth lift slightly, softening the appearance of the lines. This approach works best for people whose marionette lines are partly driven by strong muscle pull rather than pure volume loss. The effect lasts roughly three to four months.
Surgery
A lower facelift addresses marionette lines by physically repositioning the deeper tissue layers and removing excess skin. It produces the most dramatic and longest-lasting results, but it’s also the most involved option. Unlike fillers and muscle relaxers, which are designed to be repeated periodically for maintenance and fine-tuning, a facelift revision is a significant undertaking financially, emotionally, and physically. Most people explore non-surgical options first and consider surgery when the degree of sagging exceeds what fillers can correct.
What About Sleep Position?
You may have heard that sleeping on one side deepens wrinkles asymmetrically. A study specifically examining this found no significant correlation between preferred sleep side and the side with more wrinkles or facial sagging. So while sleeping on your face can cause temporary creasing, it doesn’t appear to be a meaningful driver of permanent marionette lines.
Why Some People Get Them Younger
If you’re noticing marionette lines in your 30s or even late 20s, a few factors could explain it. Genetics largely determine your facial bone structure, how much fat padding you naturally carry in your lower face, and how quickly your collagen declines. People with naturally thinner faces or less lower-face volume tend to develop these lines earlier. Significant weight fluctuations, chronic unprotected sun exposure, and smoking can all push the timeline forward by years. Habitual facial expressions matter too: if you tend to frown or clench your jaw frequently, the downward-pulling muscles around your mouth get more of a workout, which over time etches those lines more deeply into the skin above them.