Citronellal ●
TL;DR. This ingredient is used primarily as a fragrance material, adding a fresh lemony, green, rosy note to perfumes, skin care, hair care, and cleansing products.
What does Citronellal do in a cosmetic formula?
This ingredient is used primarily as a fragrance material, adding a fresh lemony, green, rosy note to perfumes, skin care, hair care, and cleansing products.
Is Citronellal clean?
From a clean-beauty perspective, it is acceptable but not friction-free because it is a recognized fragrance allergen that must be disclosed in the EU above very low thresholds. Clean standards generally allow it when used within IFRA limits and clearly labeled.
Is Citronellal sustainable?
This material can be sourced from plant essential oils or made through terpene chemistry, so its footprint depends on the feedstock and agricultural practices. It is expected to biodegrade and is not considered a highly persistent silicone- or fluorinated-type material.
Is Citronellal COSMOS-approved?
It can align with COSMOS-natural and COSMOS-organic fragrance rules when obtained from natural aromatic raw materials and processed through permitted methods. Its Green Chemistry profile is strongest when renewable feedstocks and low-residue isolation processes are used, but allergen management remains part of the assessment.
How does Citronellal work chemically?
The molecule is an acyclic monoterpenoid aldehyde with one double bond, which gives it strong odor impact at very low fragrance-use levels. Like many unsaturated aldehydes, it can oxidize with air, light, and heat, so formulators often manage it with antioxidants, tight packaging, and IFRA category limits.
Last updated 2026-05-13