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Ingredients

Ingredient Dictionary

HOMOSALATE

2-hydroxybenzoic acid (3,3,5-trimethylcyclohexyl) ester is a member of phenols and a benzoate ester.

Korean limit
10%
Molecular structure

How much products actually contain

4 products state the amountmedian 7%

  • under 0.01% 0
  • 0.01–0.1% 0
  • 0.1–1% 0
  • 1% or more 4

Amounts are mostly stated by products named after the ingredient, so they may lean towards token amounts.

Of the products containing it, 126 list it before the 1% line and 10 after it (usually 1% or less).

Products using this ingredient

12 of 129 confirmed · likeliest to carry enough first · See all 129

Definition

US FDA substance register · UNII V06SV4M95S · registered name HOMOSALATE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

2-hydroxybenzoic acid (3,3,5-trimethylcyclohexyl) ester is a member of phenols and a benzoate ester. It is functionally related to a salicylic acid.

Source: PubChem

Homosalate is the substituted phenolic compound that conforms to the formula:

Cosmetic roles

Listed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCEFilters UV to protect skin (sunscreen active)UV FILTERAbsorbs UV (including to protect the product)UV ABSORBER

Safety & regulatory references

Allowed UV filter
United Kingdom

Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)

Argentina · Brazil

  • Maximum concentration permitted at final product : 15%

ASEAN

  • Maximum authorised concentration in the finished cosmetic product : 10%

Canada

  • Maximum Concentration Permitted : ≤ 15%

Taiwan · China · South Korea

  • Maximum concentration : 10%

United States

  • Specific Limitations and Comments : Use of the term "sunscreen" or similar sun protection wording in a product's labeling generally causes the product to be subject to regulation as a drug or a drug/cosmetic, depending on the claims. However, sunscreen ingredients may also be used in some cosmetic products to protect the products’ color. The labelling must also state why the sunscreen ingredient is used, for example, "Contains a sunscreen to protect product color." If this explanation isn’t present, the product may be subject to regulation as a drug (21 CFR 700.35). For more information on sunscreens, refer to Tanning Products

유럽

  • Product Type, body parts : Face products with the exception of propellent spray products
  • Maximum concentration in ready for use preparation : 7.34 %

Japan

  • Maximum amount per 100 g(Maximum amount of ingredient per 100 g) : 10 g(10 g)

European Union

  • Product Type, body parts : (a) Face products, hand products, and lip products, excluding propellant and pump spray products (b) Body products, including propellant and pump spray products (c) Other products
  • Maximum concentration in ready for use preparation : (a) 6% (b) 2,2% (c) 0,5% Footnote 1: However, cosmetic products containing '2-Hydroxy-4-methoxy-benzophenone/Oxybenzone' and complying with the restrictions set out in Regulation (EC) No 1223/2009 as applicable on 27 July 2022 may be placed on the Union market until 28 January 2023 and be made available on the Union market until 28 July 2023.
  • Other : (a) If used at 0,5 % to protect product formulation, the levels used as UV filter must not exceed 5,5 %. (b) If used at 0,5 % to protect product formulation, the levels used as UV filter must not exceed 1,7 %.
  • Wording of conditions of use and warnings : For (a) and (b): Contains Benzophenone-3 (*) Footnote (*): Not required if concentration is 0,5 % or less and when it is used only for product protection purposes.

Source: MFDS (Korea) cosmetic regulatory information

EU Cosmetics Regulation, Annex VI (allowed UV filters), entry 3 · maximum concentration 7,34 % · applies to Face products with the exception of propellent spray products

Source: EU allowed UV filters (Annex VI)

Restriction VI/3 · Other restriction: ban substances that deplete the ozone layer · SCCS opinion: Opinion on Homosalate; OPINION on Homosalate

Source: EU CosIng ingredient list

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

Official labels & definitions

JCIA labelling name ホモサレート: 本品は、サリチル酸(*)の誘導体であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

HOMOSALATEINCI호모살레이트Korean label name (MFDS standard)Benzoic acid, 2-hydroxy-, 3,3,5-trimethylcyclohexyl esterSynonymホモサレートJapanese labelling name
CAS No.chemical registry number
118-56-9
EC No.EU chemical inventory number
204-260-8
DTXSIDUS EPA chemical ID
DTXSID1026241
DTXCIDUS EPA compound ID
DTXCID606241
IUPAC
3,3,5-Trimethylcyclohexyl 2-hydroxybenzoate
Molecular formula
C16H22O3
Molecular weight
262.349 g/mol

Measured properties

Appearance
3,3,5-trimethylcyclohexylsalicylate appears as viscous or light yellow to slightly tan liquid or oil. (NTP, 1992) · solid
Boiling point
322 to 329 °F at 760 mmHg (NTP, 1992)
Solubility
Insoluble (<1 mg/ml at 79 °F) (NTP, 1992)
Density
1.045 at 77 °F (NTP, 1992) - Denser than water, will sink
Melting/freezing point
&amp, lt, -20 ℃
Initial boiling point and range
295.1 ℃(4 mmHg)
Flash point
169~173 ℃
Vapour pressure
0.013 ㎩ (20℃)
Water solubility
0.4 ㎎/ℓ (25 °C)
Relative density
1.1
n-Octanol/water partition coefficient (Kow)
6.16
Auto-ignition temperature
402 ℃
Viscosity
85.1 cP (20°C)
Molecular weight
262.35

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 12 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.

  • UV stabilizer8
  • Softener and conditioner2
  • Fragrance2

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 0 eye studies are on record.

Classed as low2

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 3 studies
  • Ambiguous
    skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: mouse ear swelling test
  • Not likely to be sensitizing
    skin sensitisation: in vivo (non-LLNA) · Screening · equivalent or similar to OECD Guideline 406 (Skin Sensitisation)
  • Studies Indicate No Significant Irritation
    skin corrosion: in vitro / ex vivo · Screening · EU Method B.46 (In Vitro Skin Irritation: Reconstructed Human Epidermis Model Test) according to OECD Guideline 439 (In Vitro Skin Irritation: Reconstructed Human Epidermis Test Method) according to

Source: US EPA CompTox dashboard

Related literature

Linked databases 26