Citronella Oil

What is Citronella Oil?

Citronella oil is an essential oil derived from steam distillation of the leaves and stems of Cymbopogon nardus or Cymbopogon winterianus, tropical grasses native to Asia. It features a bright, lemony-grassy aroma from key volatile compounds like citronellal, geraniol, and citronellol. In cosmetics, it serves primarily in the fragrance category, added in trace amounts to perfumes, lotions, cleansers, and soaps. It functions by releasing scent molecules that interact with olfactory receptors for a sensory lift, while its volatile nature helps neutralize and overlay base product odors. Additionally, its solvent-like properties contribute a subtle astringent and refreshing after-feel, enhancing the tonic quality of formulas without heavy residues.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.
Tonic
Supports a light, toning after-feel—often combining mild astringency, refreshing solvents, and humectants—to prep skin and refine sensory finish.

Benefits

Provides a vibrant, citrus-fresh scent to uplift product sensory profiles.

Effectively masks underlying formulation odors for a cleaner aroma experience.

Offers a light toning sensation, refreshing skin's surface feel.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Users preferring natural, plant-derived fragrances in daily skincare.
People with known fragrance allergies or sensitivities.
Individuals seeking products with odor-neutralizing qualities.
Individuals prone to contact dermatitis from essential oils.
Those desiring a brisk, invigorating finish from toning ingredients.
Those with very sensitive or reactive skin types.

Safety Notes

  • Rated low hazard by independent safety assessments when used as directed.
  • Subject to fragrance regulations limiting allergens for broad compatibility.

Frequently Asked Questions about Citronella Oil

What is citronella oil sourced from?

It comes from steam-distilling leaves of citronella grass plants like Cymbopogon nardus.

Is citronella oil comedogenic?

It has a non-comedogenic rating, unlikely to clog pores.

Can it cause skin reactions?

Possible in sensitive individuals due to natural allergens; patch testing advised.