Botox relaxes muscles to soften movement lines — it doesn't add volume or fill deep folds at rest (that's filler). This self-check reflects the manufacturer and dermatology guidance; it never diagnoses.

• What it treats, onset, duration, contraindications (allergy, pregnancy, neuromuscular) — BOTOX Cosmetic (manufacturer) · Cleveland Clinic
• Dynamic-wrinkle definition & Botox-vs-filler — Cleveland Clinic (neuromodulators)
• Mechanism, onset & duration — American Academy of Dermatology
• Drug interactions (aminoglycosides, muscle relaxants) — FDA prescribing information