What it is
The register’s chemical name for it: “2-Phenylmethyleneoctanal; alpha-Hexylcinnamaldehyde; 2-Benzylideneoctanal; alpha-n-hexyl-beta-phenylacrolein.”
- EU register name (INCI)
- HEXYL CINNAMAL
- CAS number
- 101-86-0
- EC number
- 202-983-3/639-566-4
- Other names in the register
- 2-Phenylmethyleneoctanal; alpha-Hexylcinnamaldehyde; 2-Benzylideneoctanal; alpha-n-hexyl-beta-phenylacrolein
What the register lists it for
These are the uses the European Commission’s CosIng register lists for Hexyl Cinnamal in any cosmetic, hair roles first. They say why a maker might add it, not what it does in one formula, and they aren’t a safety rating.
- Perfuming
-
Used as a perfume or scent material. Essential oils and their scent compounds, such as linalool and limonene, carry this role.
Register definition: “Used for perfume and aromatic raw materials.”
Where it sits on each label
US labels list ingredients from most to least, except that those at 1% or less may follow in any order. A name near the top is a large part of the formula. A label doesn’t mark where the 1% point falls, so further down, the order says little about how much is in it.
- Shampoos 4 labels First five names: 0 of 4 Shampoos without it
- Clarifying shampoos 1 label First five names: 0 of 1 Clarifying shampoos without it
- Rinse-out conditioners 3 labels First five names: 0 of 3 Rinse-out conditioners without it
- Deep conditioners 1 label First five names: 0 of 1 Deep conditioners without it
- Leave-in conditioners 3 labels First five names: 0 of 3 Leave-in conditioners without it
- Stylers 4 labels First five names: 0 of 4 Stylers without it
- Protein treatments 1 label First five names: 0 of 1 Protein treatments without it
- Heat protectants 2 labels First five names: 0 of 2 Heat protectants without it
- Hair oils 1 label First five names: 0 of 1 Hair oils without it
- Curl refreshers 1 label First five names: 0 of 1 Curl refreshers without it
Every label, product by product (21)
- Ouidad Curl Quencher Moisturizing Shampoo Shampoo 28th of 37 names
- Not Your Mother's Curl Talk Clean Slate Daily Shampoo Shampoo 18th of 22 names
- OLAPLEX No.4 Bond Maintenance Strengthening Shampoo Shampoo 74th of 78 names
- OLAPLEX Nº.4CURL Bond Shaper Hydrating Curl Shampoo Shampoo 61st of 62 names
- OLAPLEX No.4C Bond Maintenance Clarifying Shampoo Clarifying shampoo 51st of 55 names
- Not Your Mother's Curl Talk Clean Slate Daily Conditioner Rinse-out conditioner 26th of 30 names
- Aunt Jackie's In Control Moisturizing Softening Conditioner Rinse-out conditioner 34th of 39 names
- OLAPLEX No.5 Bond Maintenance Strengthening Conditioner Rinse-out conditioner 62nd of 66 names
- tgin Honey Miracle Hair Mask Deep conditioner 27th of 29 names
- Aunt Jackie's Quench! Moisture Intensive Leave-In Conditioner Leave-in conditioner 23rd of 31 names
- PATTERN Leave-In Conditioner Leave-in conditioner 37th of 43 names
- tgin Green Tea Super Moist Leave-In Conditioner Leave-in conditioner 33rd of 34 names
- Aunt Jackie's Don't Shrink Flaxseed Elongating Curling Gel Styler 16th of 20 names
- Ouidad Curl Quencher Moisturizing Styling Gel Styler 33rd of 38 names
- PATTERN Curl Gel Styler 33rd of 38 names
- tgin Curl Bomb Moisturizing Styling Gel Styler 26th of 27 names
- Redken Extreme CAT Protein Reconstructing Treatment Protein treatment 15th of 16 names
- TRESemmé Protecting Heat Styling Spray Heat protectant 26th of 29 names
- OLAPLEX Nº.9 Bond Protector Nourishing Hair Serum Heat protectant 29th of 31 names
- OLAPLEX Nº.7 Bonding Oil Hair oil 21st of 21 names
- PATTERN Hydrating Mist Curl refresher 46th of 52 names
Each line runs from the first name on a label to the last; a dot is where this ingredient sits. Makers change formulas now and then; if the list on your bottle differs, go by your bottle.
Your next step
Other perfuming ingredients on these labels
- Linalool 63 labels
- Citronellol 24 labels
- Geraniol 24 labels
- Coumarin 15 labels
- Benzyl Salicylate 12 labels
- Linum Usitatissimum (Linseed) Seed Oil 11 labels
- Amyl Cinnamal 9 labels
- Alpha-Isomethyl Ionone 7 labels
Updated · The name, numbers and uses come from the European Commission’s CosIng entry (CC BY 4.0); we write the uses in US spelling and put the hair ones first. The labels are each maker’s own. The order rule is the FDA’s Cosmetics Labeling Guide. All our sources are on the Sources page.