{
 "name": "비타민C 1g당 가격 순위",
 "ingredient": "비타민C",
 "ingredient_inci": "Ascorbic Acid",
 "unit": "KRW per g of labeled ingredient",
 "price_source": "Coupang (KR) listed price",
 "collected": "2026-11-13",
 "week": "2026-11-13",
 "count": 11,
 "page": "https://gramdang.com/vitamin-c/",
 "methodology": "https://gramdang.com/method/",
 "note": "표시 함량 기준(시험값 아님). price_status가 '미확인'이면 price_date의 가격을 그대로 쓴 것입니다. 효과·자극 순위가 아닙니다. Label claims, not lab results. Not a ranking of efficacy.",
 "credit": "인용 시 gramdang.com과 기준일을 적어 주세요. / Please credit gramdang.com with the date.",
 "products": [
  {
   "rank": 1,
   "id": "c11",
   "brand": "파리노아",
   "name": "순수 비타민C 앰플 25%",
   "labeled_pct": 25.0,
   "size": 50.0,
   "size_unit": "ml",
   "ingredient_amount": 12.5,
   "amount_unit": "g",
   "price_krw": 19140,
   "price_per_unit_krw": 1531,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 0.0,
   "url": "https://gramdang.com/p/c11/"
  },
  {
   "rank": 2,
   "id": "c02",
   "brand": "디오디너리",
   "name": "비타민C 서스펜션 23% + HA 스피어스 2%",
   "labeled_pct": 23.0,
   "size": 30.0,
   "size_unit": "ml",
   "ingredient_amount": 6.9,
   "amount_unit": "g",
   "price_krw": 12300,
   "price_per_unit_krw": 1783,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 0.0,
   "url": "https://gramdang.com/p/c02/"
  },
  {
   "rank": 3,
   "id": "c07",
   "brand": "라뮤셀",
   "name": "순수 비타민C 7.5% 앰플",
   "labeled_pct": 7.5,
   "size": 40.0,
   "size_unit": "ml",
   "ingredient_amount": 3.0,
   "amount_unit": "g",
   "price_krw": 9900,
   "price_per_unit_krw": 3300,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": -33.6,
   "url": "https://gramdang.com/p/c07/"
  },
  {
   "rank": 4,
   "id": "c06",
   "brand": "코스드바하",
   "name": "VC 순수 비타민C 15% 앰플",
   "labeled_pct": 15.0,
   "size": 30.0,
   "size_unit": "ml",
   "ingredient_amount": 4.5,
   "amount_unit": "g",
   "price_krw": 14900,
   "price_per_unit_krw": 3311,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 0.0,
   "url": "https://gramdang.com/p/c06/"
  },
  {
   "rank": 5,
   "id": "c10",
   "brand": "세라핌",
   "name": "고농축 순수 비타민C 세럼 25%",
   "labeled_pct": 25.0,
   "size": 30.0,
   "size_unit": "ml",
   "ingredient_amount": 7.5,
   "amount_unit": "g",
   "price_krw": 24870,
   "price_per_unit_krw": 3316,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 0.0,
   "url": "https://gramdang.com/p/c10/"
  },
  {
   "rank": 6,
   "id": "c04",
   "brand": "스킨스탠다드",
   "name": "30% 순수 비타민C 더하기세럼",
   "labeled_pct": 30.0,
   "size": 30.0,
   "size_unit": "ml",
   "ingredient_amount": 9.0,
   "amount_unit": "g",
   "price_krw": 31000,
   "price_per_unit_krw": 3444,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 3.3,
   "url": "https://gramdang.com/p/c04/"
  },
  {
   "rank": 7,
   "id": "c03",
   "brand": "더마팩토리",
   "name": "퓨어 비타민 C E 페룰릭 앰플 (순수 비타민C 15%)",
   "labeled_pct": 15.0,
   "size": 22.0,
   "size_unit": "ml",
   "ingredient_amount": 3.3,
   "amount_unit": "g",
   "price_krw": 11450,
   "price_per_unit_krw": 3470,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 4.1,
   "url": "https://gramdang.com/p/c03/"
  },
  {
   "rank": 8,
   "id": "c01",
   "brand": "코스알엑스",
   "name": "어드밴스드 더 비타민C 23 세럼",
   "labeled_pct": 23.0,
   "size": 20.0,
   "size_unit": "ml",
   "ingredient_amount": 4.6,
   "amount_unit": "g",
   "price_krw": 17930,
   "price_per_unit_krw": 3898,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 3.6,
   "url": "https://gramdang.com/p/c01/"
  },
  {
   "rank": 9,
   "id": "c05",
   "brand": "내츄럴랩",
   "name": "순수 비타민C 25% 세럼",
   "labeled_pct": 25.0,
   "size": 30.0,
   "size_unit": "ml",
   "ingredient_amount": 7.5,
   "amount_unit": "g",
   "price_krw": 30000,
   "price_per_unit_krw": 4000,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 0.0,
   "url": "https://gramdang.com/p/c05/"
  },
  {
   "rank": 10,
   "id": "c08",
   "brand": "직택",
   "name": "순수 비타민C 15% 앰플",
   "labeled_pct": 15.0,
   "size": 24.0,
   "size_unit": "ml",
   "ingredient_amount": 3.6,
   "amount_unit": "g",
   "price_krw": 20750,
   "price_per_unit_krw": 5764,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": -0.9,
   "url": "https://gramdang.com/p/c08/"
  },
  {
   "rank": 11,
   "id": "c09",
   "brand": "리즈케이",
   "name": "퍼스트씨 세럼 순수 비타민C 15%",
   "labeled_pct": 15.0,
   "size": 20.0,
   "size_unit": "ml",
   "ingredient_amount": 3.0,
   "amount_unit": "g",
   "price_krw": 38000,
   "price_per_unit_krw": 12667,
   "price_date": "2026-11-13",
   "price_status": "확인",
   "change_pct_vs_last_week": 1.7,
   "url": "https://gramdang.com/p/c09/"
  }
 ]
}