Limonen ●
TL;DR. This ingredient is primarily used as a fragrance component, adding a fresh citrus-like scent. It can also function as a light solvent in some formulas.
What does Limonen do in a cosmetic formula?
This ingredient is primarily used as a fragrance component, adding a fresh citrus-like scent. It can also function as a light solvent in some formulas.
Is Limonen clean?
From a clean beauty perspective, it is accepted by many standards but comes with allergen-labeling friction, especially in the EU at low threshold levels. Its oxidation products are more sensitizing than the fresh material, so freshness, packaging, and antioxidant support matter.
Is Limonen sustainable?
This material is commonly sourced from citrus peel byproducts, which is a favorable supply-chain use when traceable. It is readily biodegradable, but it is volatile and can contribute to fragrance-related air emissions.
Is Limonen COSMOS-approved?
It can be permitted under COSMOS-natural and COSMOS-organic when it comes from an allowed natural fragrance source and meets the standard’s fragrance rules. Its renewable sourcing and biodegradability align well with Green Chemistry, while oxidation management and allergen disclosure are the main caveats.
How does Limonen work chemically?
The molecule is a small, lipophilic cyclic monoterpene hydrocarbon with high volatility and poor water solubility, which is why it performs well in scent and solvent roles. Typical fragrance use is often well below 1 percent, and it should be protected from air, light, and heat because oxidation can form hydroperoxides that increase sensitization potential.
Last updated 2026-05-13