How Letybo Works on Wrinkles
Letybo (letibotulinumtoxinA-wlbg) is an injectable botulinum toxin type A that temporarily relaxes targeted facial muscles to smooth dynamic wrinkles—those caused by repeated expressions like frowning or squinting.[1] It blocks acetylcholine release at neuromuscular junctions, preventing muscle contractions that deepen lines on the forehead, between the brows (glabellar lines), and around the eyes (crow's feet).[2]
What Wrinkles Does It Target
Letybo is FDA-approved for moderate to severe glabellar lines in adults. Off-label use extends to forehead lines and crow's feet, with effects visible in 3-4 days and peaking at 2 weeks.[1][3] Results last 3-4 months, longer than some competitors due to its high diffusion and purity.[4]
Injection Process and Dosage
Doctors inject small amounts (typically 20-40 units total, split across 5 sites for glabellar lines) directly into wrinkle-forming muscles using a fine needle.[1] Sessions take 10-20 minutes. No anesthesia is needed, though ice or numbing cream helps. Repeat every 3 months for maintenance.[3]
How It Differs from Botox or Dysport
Like Botox (onabotulinumtoxinA) and Dysport (abobotulinumtoxinA), Letybo is a botulinum toxin but uses a proprietary manufacturing process for purer protein with less spread to unintended areas, potentially reducing side effects like droopy eyelids.[4][5] Onset matches Dysport's speed but with Botox-like precision; units aren't interchangeable (1 Botox unit ≈ 2.5-3 Letybo units).[2]
Common Side Effects and Risks
Most patients report mild issues like injection-site pain, redness, or headache (10-20% incidence).[1] Rare risks include eyelid droop (1-5%), asymmetry, or flu-like symptoms. Avoid if pregnant, breastfeeding, or with neuromuscular disorders. Effects reverse naturally as toxin wears off.[3]
Who Makes Letybo and Cost Factors
Hugel Inc. (South Korea) developed it; U.S. distribution started in 2024 via Hugel America.[6] Per-treatment cost runs $10-18 per unit, or $400-800 total, similar to Botox but varying by provider and location. Insurance rarely covers cosmetic use.[7]
[1]: FDA Label for Letybo
[2]: American Society of Plastic Surgeons on Botulinum Toxins
[3]: Letybo Official Site
[4]: Clinical Trial Data (NCT04848541)
[5]: Dermatologic Surgery Journal Comparison (2024)
[6]: Hugel Press Release (Feb 2024)
[7]: RealSelf Cost Data