Citral[2][4] ●
TL;DR. This ingredient is used primarily as a fragrance component, adding a bright lemon-like scent profile to perfumes, skin care, hair care, and cleansing products. It can also contribute minor deodorizing character in fragranced formulas.
What does Citral[2][4] do in a cosmetic formula?
This ingredient is used primarily as a fragrance component, adding a bright lemon-like scent profile to perfumes, skin care, hair care, and cleansing products. It can also contribute minor deodorizing character in fragranced formulas.
Is Citral[2][4] clean?
From a clean-beauty perspective, this ingredient has friction because it is a recognized fragrance allergen and sensitizer for some users. It is subject to IFRA limits and allergen labeling thresholds, commonly 0.001% in leave-on products and 0.01% in rinse-off products in the EU.
Is Citral[2][4] sustainable?
This ingredient can be obtained from plant essential oils or made synthetically, so its sourcing profile depends on the supplier. It is generally expected to biodegrade, but fragrance supply chains benefit from traceable botanical sourcing and controlled impurity profiles.
Is Citral[2][4] COSMOS-approved?
It can fit COSMOS-natural or COSMOS-organic formulas when supplied as a compliant natural aromatic material, while synthetic versions may not qualify. Its Green Chemistry profile is strongest when renewably sourced and purified with efficient processes, with the main caveat being allergen management rather than persistence.
How does Citral[2][4] work chemically?
The molecule is an acyclic monoterpene aldehyde mixture of two geometric isomers, which explains both its volatility and its strong citrus odor impact at very low fragrance levels. It is sensitive to air, light, and oxidation, so formulators often use antioxidants, tight packaging, and controlled fragrance dosing to support stability.
Last updated 2026-05-13