Lip Flip Fail? Why Your Lip Is Drooping & Medically Approved Next Steps

A lip flip is a popular cosmetic procedure that uses small amounts of botulinum toxin (like Botox®) to relax the muscles around the upper lip. This allows the lip to gently "flip" outward, creating the appearance of a fuller lip without adding volume.

It's quick, minimally invasive, and generally safe when performed by a qualified professional. But what happens if your lip starts drooping afterward?

If you're experiencing a drooping lip after a lip flip, here's what could be happening — and what to do next.

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First: Is Drooping Normal After a Lip Flip?

Mild changes in movement are expected. The purpose of a lip flip is to relax the orbicularis oris muscle (the muscle around your mouth). Because that muscle controls lip movement, you may notice:

• Slight difficulty puckering
• Mild speech changes (like trouble pronouncing "P" or "B" sounds)
• Trouble drinking through a straw
• A subtle feeling of weakness in the upper lip

These effects are usually temporary and peak within 1–2 weeks.

However, noticeable drooping, asymmetry, or difficulty controlling one side of your mouth is not something to ignore.

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Common Causes of Lip Drooping After a Lip Flip

1. Toxin Spread Beyond the Target Area

Botulinum toxin works by relaxing muscles. If it spreads beyond the intended injection site, nearby muscles may also weaken. This can cause:

• One-sided drooping
• Uneven smile
• Trouble keeping lips closed
• Drooling in more severe cases

This is more likely if:

• Too much product was injected
• Injections were placed too low
• You rubbed or massaged the area soon after treatment
• You laid flat or exercised vigorously within the first few hours

2. Dose Was Too High for Your Anatomy

Everyone's facial muscles are different. A dose that works well for one person may be too strong for another.

Smaller lips or thinner musculature may be more sensitive to even small amounts of toxin.

3. Injector Experience Matters

Lip flips require precision. Placement must be superficial and strategic. Inexperienced injectors may:

• Inject too deeply
• Inject too close to muscles responsible for speech or mouth closure
• Misjudge symmetry

Choosing a licensed medical professional significantly reduces risk.

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Could It Be Something More Serious?

In rare cases, lip drooping may not be caused by the lip flip at all.

Sudden facial drooping can sometimes signal:

• Bell's palsy
• Stroke
• Nerve injury
• Neurological conditions

If the drooping:

• Affects more than just the upper lip
• Includes eye drooping
• Causes facial numbness
• Causes difficulty speaking clearly
• Appeared suddenly and dramatically

You should not assume it's just the cosmetic treatment.

If you're concerned your symptoms may indicate something more serious than a cosmetic side effect, you can use this free AI-powered Facial paralysis symptom checker to help assess your risk and determine whether immediate medical attention is needed.

And if symptoms are severe, sudden, or accompanied by weakness, confusion, or vision changes — seek emergency medical care immediately. Stroke is time-sensitive.

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How Long Does a Lip Flip Droop Last?

The good news: Botulinum toxin is temporary.

If your drooping is caused by the lip flip, it will typically improve as the toxin wears off.

• Onset: 3–7 days after injection
• Peak effect: 10–14 days
• Duration: 6–8 weeks (sometimes up to 12)

Most unwanted weakness improves gradually over several weeks.

There is no way to instantly reverse botulinum toxin once injected. It must metabolize naturally.

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What You Can Do Right Now

✅ 1. Contact Your Injector

Reputable providers expect follow-up questions. Let them evaluate:

• Whether the dose was appropriate
• If asymmetry can be corrected with a small balancing injection
• Whether what you're experiencing is within normal limits

Do not attempt to "fix" it elsewhere without medical advice.

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✅ 2. Be Patient (If Symptoms Are Mild)

If you're experiencing:

• Mild asymmetry
• Slight speech changes
• Minor drooping only noticeable to you

It may simply take time.

Avoid:

• Repeatedly checking in mirrors (this increases anxiety)
• Excessive facial exercises (these do not speed recovery)
• Massaging aggressively

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✅ 3. Protect Lip Function

If your lip feels weak:

• Use a straw carefully
• Sip from cups slowly
• Apply lip balm to prevent dryness
• Eat softer foods if chewing feels awkward

Most people adapt quickly while waiting for the toxin to wear off.

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✅ 4. Seek Medical Care Immediately If You Notice:

• Sudden worsening facial drooping
• Drooping affecting eye or entire side of face
• Slurred speech
• Arm or leg weakness
• Severe headache
• Confusion

These are not typical lip flip side effects and require urgent evaluation.

When in doubt, speak to a doctor. It is always better to rule out something serious than to assume it's cosmetic.

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How to Prevent a Lip Flip Fail in the Future

If you're considering another lip flip later, here's how to reduce risk:

✔ Choose the Right Provider

• Licensed medical professional (MD, DO, NP, PA)
• Experienced specifically with lip flips
• Before-and-after photos available
• Clear discussion of risks

✔ Start With a Conservative Dose

You can always add more later. You cannot remove toxin once injected.

✔ Follow Aftercare Instructions

For the first 4–6 hours:

• Stay upright
• Avoid heavy exercise
• Do not massage the area
• Avoid excessive heat

✔ Discuss Your Anatomy

If you already have:

• Thin lips
• Pre-existing asymmetry
• Mild facial weakness

A lip flip may not be ideal. Lip filler or alternative treatments might be better options.

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When a Lip Flip Might Not Be Right for You

Some people are not ideal candidates for a lip flip, including those with:

• Pre-existing neuromuscular disorders
• History of Bell's palsy
• Significant lip asymmetry
• Difficulty with speech articulation
• Jobs requiring precise lip control (public speaking, singing)

A thorough medical discussion before treatment matters.

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Emotional Side Effects Are Real, Too

A cosmetic result that doesn't meet expectations can feel upsetting. That reaction is valid.

However:

• Most lip flip complications are temporary.
• Visible drooping is usually subtle to others.
• Time is typically on your side.

If anxiety about your symptoms is overwhelming, that's also a reason to speak to a healthcare professional. Peace of mind is important.

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Bottom Line

A lip flip is generally safe, but drooping can happen — usually due to temporary muscle weakness from toxin spread or dosing.

Most cases:

• Improve within weeks
• Do not cause permanent damage
• Can be evaluated by your injector

However, if drooping is sudden, severe, or involves other parts of your face, do not assume it's cosmetic. Taking a moment to check your symptoms with a free Facial paralysis symptom checker can help you understand whether your situation warrants urgent medical attention, giving you clarity and peace of mind about your next steps.

Above all, speak to a doctor about any symptoms that feel concerning, unusual, or potentially life-threatening. It's always better to ask questions early than to wait.

Cosmetic treatments should enhance confidence — not compromise health. If something feels off, trust your instincts and get it checked.