Citronellol

Concerns
Allergen

What is Citronellol?

Citronellol is a monoterpene alcohol, chemically known as 3,7-dimethyloct-6-en-1-ol, naturally present in essential oils from plants such as citronella grass, geranium, lemon balm, and rose. Extracted primarily through steam distillation, it belongs to the fragrance ingredient category in cosmetics. In formulations, it serves as a key component in perfumes and scented products, releasing a light, rosy-citrusy aroma upon evaporation. This volatile compound blends seamlessly into emulsions, gels, and sprays, contributing subtle scent layers that define a product's sensory identity. Beyond perfuming, it neutralizes faint off-notes from other ingredients, ensuring a cleaner olfactory profile. Typically incorporated at trace levels, citronellol enhances the aesthetic appeal of leave-on and rinse-off items like lotions, shampoos, and cleansers without altering texture or stability.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3-4 View on EWG →
PubChem View on PubChem →

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.

Benefits

Adds a pleasant, fresh floral scent to enhance product enjoyment.

Helps mask undesirable odors from base ingredients.

Supports overall sensory experience in scented formulations.

Who It's For

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

Who May Benefit Who Should Avoid
Individuals enjoying lightly fragranced skincare.
Those with known fragrance allergies.
Users with non-reactive skin seeking aromatic products.
Individuals prone to contact dermatitis.
People incorporating essential oil-inspired scents in routines.
People with highly sensitive or eczema-prone skin.

Safety Notes

  • Recognized as a potential skin sensitizer; patch testing advised.
  • Regulated in concentrations to minimize exposure risks.

Frequently Asked Questions about Citronellol

What does citronellol smell like?

It offers a fresh, citrusy-rose floral note, evoking geranium and lemon undertones.

Is citronellol safe in cosmetics?

Safe at regulated low levels, but may sensitize skin; check for allergies.

Can citronellol cause skin reactions?

Possible for those sensitive to fragrances, leading to irritation or dermatitis.