Droopy mouth corners are primarily caused by a small muscle in your lower face that pulls the corners of your mouth downward, combined with age-related volume loss in the fat pads around your lips. The good news: several treatments can counteract this, ranging from quick in-office injections to surgical options with lasting results. Which approach works best depends on how pronounced the drooping is and how long you want the correction to last.
Why Mouth Corners Droop
A muscle called the depressor anguli oris (DAO) runs from your jawline to each corner of your mouth. Its job is to pull your mouth downward, which is useful when you frown but becomes a problem when the muscle gets overactive with age. As this muscle stays chronically tense, it tugs the corners of your lips into a permanent downturn that can make you look sad or angry at rest.
At the same time, the shallow fat pads just beneath the skin of your lips shrink. This fat loss converts a youthful, slightly pouty lip shape into a flatter, thinner profile. Without that cushion of volume supporting the corners, gravity and the pulling muscle win out. The combination of an overactive downward-pulling muscle and deflating tissue is what creates that “marionette” look, with lines running from the mouth corners toward the chin.
Botox for the DAO Muscle
The most popular nonsurgical fix targets the DAO muscle directly with a neurotoxin injection. By relaxing the muscle that pulls the corners down, the opposing muscles that lift your mouth gain the upper hand, creating a subtle but visible upturn. The procedure takes minutes, typically involves just one injection point on each side of the jaw, and uses a small dose of 2 to 3 units per side.
For more pronounced drooping, practitioners may use a three-point injection pattern totaling 4 to 6 units per side, since the neurotoxin spreads roughly one centimeter from each injection point. Results from one study showed a measurable lift in mouth corner angles that lasted 6 to 9 months, making this a treatment you’d repeat two or three times a year to maintain.
Risks to Know About
Precision matters here. The DAO sits close to muscles responsible for smiling, and if the injection is placed too far toward the center of your face, the toxin can spread into those neighboring muscles. The result can be an asymmetric smile or difficulty moving your lips naturally. This is why experienced injectors use specific anatomical landmarks, like the line running straight down from the center of your pupil, to determine the correct spot. When placed correctly, the effect on your smile should be minimal.
Dermal Fillers for Volume and Support
Fillers take a different approach. Instead of relaxing a muscle, they replace the volume that’s been lost around the mouth corners and along the marionette lines. Hyaluronic acid fillers injected into both the deeper and more superficial layers around the oral commissure physically prop up the corners of the mouth, restoring structural support that fat pads once provided.
Many practitioners use a cannula (a blunt-tipped needle) for the deeper layers, which reduces bruising and the risk of hitting a blood vessel. The results are immediate, though some swelling can temporarily exaggerate the effect for a few days. Long-term data on exactly how many months the lift lasts is limited. Most hyaluronic acid fillers in this area are generally expected to hold for 6 to 12 months, though individual results vary based on metabolism, the specific product used, and how much filler is placed.
Combining fillers with a small dose of neurotoxin in the DAO is a common strategy. The filler provides structural support from below while the neurotoxin reduces the downward pull from above. This dual approach often produces a more noticeable correction than either treatment alone.
Corner Lip Lift Surgery
When injections aren’t enough, or you want a permanent solution, a corner lip lift is a surgical option. This procedure removes a small amount of skin at the outer edges of the upper lip, physically repositioning the mouth corners into a slight upward curve. It’s specifically designed for people with a persistent downturn that doesn’t respond well to fillers or neurotoxins.
Recovery is relatively quick. According to Cleveland Clinic, most people can return to work the next day or within several days. Strenuous exercise, heavy lifting, and intense physical activity should be avoided for about two weeks. The tradeoff is a small scar at each corner of the mouth, which typically fades over several months but is a consideration for anyone weighing this option.
Topical Products and Skincare
Topical treatments won’t reverse significant drooping, but they can improve skin quality in the perioral area and soften the appearance of fine lines that accompany the downturn. The most useful ingredients fall into a few categories.
Retinoids (vitamin A derivatives) remain the gold standard for boosting collagen production in aging skin. Certain peptides also show promise: one synthetic peptide mimics a protein that activates a growth factor involved in collagen production, while another helps prevent existing collagen from breaking down by suppressing the enzymes that degrade it. Products containing hyaluronic acid microspheres can provide an immediate, temporary plumping effect by drawing moisture into the skin.
Some formulations include peptides that mimic compounds found in snake venom, designed to limit muscle contraction at the skin’s surface. The effect is far milder than an injection, but consistent use of a well-formulated product can improve skin texture and elasticity enough to complement professional treatments.
Do Facial Exercises Help?
Facial yoga has gained popularity online, and there’s early evidence suggesting it does something measurable to facial muscles. In one clinical trial of middle-aged women, an intensive face yoga program increased muscle elasticity across all evaluated facial muscles. The muscles around the mouth specifically showed decreased stiffness and tension, suggesting improved flexibility.
That said, the research is still in its early stages. Most studies rely on subjective evaluations, and large randomized controlled trials are lacking. The current takeaway is that facial exercises may support muscle tone and elasticity over time, but they’re unlikely to produce the kind of visible lift you’d get from fillers or neurotoxin injections. Think of them as a low-cost supplement to other treatments rather than a standalone solution.
How to Slow the Progression
Sun exposure is the single biggest accelerator of collagen breakdown in facial skin. Daily broad-spectrum sunscreen around the mouth and lower face helps preserve the structural proteins that keep skin firm. Smoking is the other major contributor, both because of the repetitive pursing motion and because tobacco chemicals directly degrade collagen and elastin.
Sleep position plays a smaller but real role. Consistently sleeping face-down or on one side compresses facial tissue for hours at a stretch, which over years can contribute to asymmetric volume loss and deeper creasing. Sleeping on your back or using a silk pillowcase that allows skin to glide rather than bunch can reduce this cumulative effect. Staying well hydrated and maintaining a stable weight also helps, since repeated weight fluctuations stretch and deflate the fat compartments in your face.