Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle

2,4-DIMETHYL-3-CYCLOHEXENE CARBOXALDEHYDE.

Optional CAS 68039-49-6 / FRAGRANCE, PERFUMING, TONIC

A synthetic aldehyde fragrance component that delivers fresh green, leafy, and citrus-like olfactory notes to skincare formulations. Also known as Triplal, this ingredient serves dual roles as both a fragrance enhancer and odor-masking agent while providing subtle tonic properties.

perfuming masking tonic

Science

Functions primarily through olfactory receptor interaction to create sensory appeal, while also acting as a masking agent to neutralize undesirable base odors in formulations. Its tonic classification suggests it may contribute to a perceived sense of skin well-being, though the specific biological pathways for this effect remain poorly characterized.


Research

Medium confidence
Effective range 0.1–3%
Optimal

1.5%

Key findings

  1. 01 Standard usage range effectively delivers green fragrance character without excessive sensitization risk
  2. 02 Human repeat insult patch testing confirmed allergenic potential at elevated concentrations while demonstrating safety at typical use levels

Transparency

Not commonly dusted
Red flag below
3%

Not typically used for marketing purposes; concentrations above 3% indicate potential over-dosing with increased sensitization risk


The Formula

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

Susceptible to oxidative degradation and potential discoloration over time; requires protection from strong alkaline conditions

Conflicts

  • Strong oxidizing agents
  • Strong bases
  • Primary amines

Safety

CIR Status
Not reviewed
Max tested
3%
Sensitization risk Moderate

Classified as Category 1 Skin Sensitizer (H317) by ECHA; regulated under IFRA fragrance standards rather than cosmetic active ingredient protocols


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Optional

A competent fragrance ingredient with moderate allergenic potential that adds sensory appeal but offers no essential skincare benefits.


Related

Finding similar ingredients…


References