{
  "n": 100,
  "overall_themes": {
    "trust_proof": {
      "count": 74,
      "pct": 74.0
    },
    "whitening_expectations": {
      "count": 63,
      "pct": 63.0
    },
    "price_value": {
      "count": 46,
      "pct": 46.0
    },
    "adverse_experience": {
      "count": 33,
      "pct": 33.0
    },
    "sensitivity": {
      "count": 27,
      "pct": 27.0
    },
    "packaging": {
      "count": 21,
      "pct": 21.0
    },
    "taste": {
      "count": 18,
      "pct": 18.0
    },
    "ingredients": {
      "count": 16,
      "pct": 16.0
    },
    "repurchase": {
      "count": 14,
      "pct": 14.0
    },
    "availability": {
      "count": 9,
      "pct": 9.0
    },
    "foam_texture": {
      "count": 7,
      "pct": 7.0
    },
    "freshness_duration": {
      "count": 6,
      "pct": 6.0
    }
  },
  "sentiment": {
    "negative": {
      "count": 45,
      "pct": 45.0
    },
    "positive": {
      "count": 28,
      "pct": 28.0
    },
    "neutral": {
      "count": 21,
      "pct": 21.0
    },
    "mixed": {
      "count": 6,
      "pct": 6.0
    }
  },
  "by_brand": {
    "DENTISTE'": {
      "n": 0,
      "themes": {},
      "sentiment": {}
    },
    "Marvis": {
      "n": 8,
      "themes": {
        "whitening_expectations": 7,
        "price_value": 6,
        "taste": 4,
        "trust_proof": 3,
        "ingredients": 2,
        "adverse_experience": 1,
        "packaging": 1,
        "repurchase": 1
      },
      "sentiment": {
        "mixed": 1,
        "neutral": 3,
        "negative": 1,
        "positive": 3
      }
    },
    "APAGARD": {
      "n": 6,
      "themes": {
        "trust_proof": 5,
        "ingredients": 3,
        "price_value": 3,
        "packaging": 2,
        "sensitivity": 2,
        "foam_texture": 1,
        "adverse_experience": 1,
        "taste": 1,
        "availability": 1,
        "repurchase": 1
      },
      "sentiment": {
        "positive": 1,
        "mixed": 2,
        "neutral": 3
      }
    },
    "CURAPROX Enzycal": {
      "n": 4,
      "themes": {
        "trust_proof": 4
      },
      "sentiment": {
        "neutral": 4
      }
    },
    "VUSSEN": {
      "n": 2,
      "themes": {
        "trust_proof": 2
      },
      "sentiment": {
        "neutral": 2
      }
    },
    "Sensodyne": {
      "n": 5,
      "themes": {
        "whitening_expectations": 3,
        "trust_proof": 3,
        "price_value": 2,
        "sensitivity": 1,
        "ingredients": 1,
        "foam_texture": 1
      },
      "sentiment": {
        "positive": 2,
        "neutral": 3
      }
    },
    "Colgate Optic White": {
      "n": 66,
      "themes": {
        "trust_proof": 53,
        "whitening_expectations": 51,
        "price_value": 34,
        "adverse_experience": 31,
        "sensitivity": 23,
        "packaging": 17,
        "repurchase": 11,
        "taste": 11,
        "ingredients": 9,
        "availability": 8,
        "freshness_duration": 6,
        "foam_texture": 5
      },
      "sentiment": {
        "negative": 44,
        "positive": 16,
        "mixed": 3,
        "neutral": 3
      }
    },
    "Oral-B/Crest 3D White": {
      "n": 7,
      "themes": {
        "trust_proof": 4,
        "whitening_expectations": 2,
        "taste": 2,
        "sensitivity": 1,
        "repurchase": 1,
        "price_value": 1
      },
      "sentiment": {
        "positive": 5,
        "neutral": 2
      }
    },
    "Sparkle": {
      "n": 0,
      "themes": {},
      "sentiment": {}
    },
    "Twin Lotus": {
      "n": 2,
      "themes": {
        "ingredients": 1,
        "packaging": 1
      },
      "sentiment": {
        "neutral": 1,
        "positive": 1
      }
    }
  },
  "limitations": [
    "Convenience sample is directional, not representative market research.",
    "60/100 records come from one public review site and one brand (Colgate Optic White), so adverse-experience and whitening themes are likely overrepresented.",
    "40/100 records are public video comments across eight brands; platform does not expose verified-purchase status and some are purchase questions rather than post-use reviews.",
    "No sufficiently specific public comments were retained for DENTISTE or Sparkle; VUSSEN has only two records. Zero records must not be interpreted as zero demand or complaints.",
    "Review variants, countries and regulations differ from the Thai trial concept; no efficacy conclusion is drawn."
  ]
}