Is there safety information?

일부 민감한 피부에는 자극을 유발할 수 있습니다.

Are there usage precautions?

항산화 및 항염 작용으로 피부 진정과 보호에 도움을 주는 플라보노이드입니다. 주름 개선 및 밝은 피부 톤을 유지하는 데 도움을 줄 수 있으며, 알레르기 반응을 줄이는 데도 유용합니다. (추천 피부타입: 민감성 피푸 제외 모든 피부 타입)

All ingredients

Ingredient Dictionary

QUERCETIN

Quercetin is a pentahydroxyflavone having the five hydroxy groups placed at the 3-, 3'-, 4'-, 5- and 7-positions.

How much products actually contain

No product states its amount yet.

Of the products containing it, 11 list it before the 1% line and 44 after it (usually 1% or less).

Products using this ingredient

12 of 55 confirmed · likeliest to carry enough first · See all 55

Definition

Quercetin is a pentahydroxyflavone having the five hydroxy groups placed at the 3-, 3'-, 4'-, 5- and 7-positions. It is one of the most abundant flavonoids in edible vegetables, fruit and wine. It has a role as a geroprotector, an antioxidant, an antibacterial agent, an antineoplastic agent, a protein kinase inhibitor, a chelator, a radical scavenger, an Aurora kinase inhibitor, a plant metabolite, a phytoestrogen and an EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor. It is a pentahydroxyflavone and a 7-hydroxyflavonol. It is a conjugate acid of a quercetin-7-olate.

Source: PubChem

US FDA substance register · UNII 9IKM0I5T1E · registered name QUERCETIN · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Quercetin is the organic compound that conforms to the formula

Cosmetic roles

Slows spoilage by oxygenANTIOXIDANTSkin conditioning not covered aboveSKIN CONDITIONING - MISCELLANEOUS

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name クェルセチン: 本品は、次の化学式で表される複素環式化合物である。

Source: JCIA labelling names (Japan)

Names & identifiers

QUERCETININCI쿼세틴Korean label name (MFDS standard)4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-SynonymクェルセチンJapanese labelling name

CAS No.chemical registry number: 117-39-5
EC No.EU chemical inventory number: 204-187-1
DTXSIDUS EPA chemical ID: DTXSID4021218
DTXCIDUS EPA compound ID: DTXCID001218

IUPAC: 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one
Molecular formula: C15H10O7
Molecular weight: 302.238 g/mol

Measured properties

Appearance: Quercetin appears as yellow needles or yellow powder. Converts to anhydrous form at 203-207 °F. Alcoholic solutions taste very bitter. (NTP, 1992) · Solid
Boiling point: Sublimes (NTP, 1992) · Sublimes
Melting point: 601 to 603 °F (NTP, 1992) · 316.5 °C
Solubility: less than 1 mg/mL at 70 °F (NTP, 1992) · 60 mg/L (at 16 °C)
Melting/freezing point: 316.5 ℃
Water solubility: 60 (NLM, ChemIDPlus)
Molecular weight: 302.24

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 5 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Softener and conditioner3
Antioxidant2

Source: US EPA CompTox dashboard