What Is Sodium Citronellate?
Sodium Citronellate, also known as sodium 3,7-dimethyl-6-octenoic acid, is the salt form of citronellic acid, a compound that occurs naturally in citronella, lemongrass and other aromatic plants. In cosmetics it is usually produced by neutralizing purified citronellic acid with a food-grade alkaline source such as sodium hydroxide, a step that turns the oily acid into a water-soluble powder or granule that mixes easily into creams and gels. The ingredient gained popularity in the 1990s when formulators began searching for plant-inspired alternatives to synthetic preservatives and scent boosters. Today it shows up in lightweight moisturizers, mattifying lotions, face masks, clarifying toners, scalp treatments, deodorant sticks and even some “clean” fragrance sprays because it can multitask as a mild skin purifier and a fresh lemon-rose scent note.
Sodium Citronellate’s Cosmetic Benefits/Uses
Here is what this multitasking ingredient brings to a formula
- Anti-Seborrheic: Helps reduce excess oil on skin or scalp which can keep the complexion looking less shiny and may calm flakes around the hairline
- Antimicrobial: Limits the growth of odor-causing or blemish-triggering microbes so products stay fresher longer and skin feels cleaner
- Fragrance: Adds a light citrus-floral scent that can mask raw material odors and create a pleasant experience without heavy perfume
Who Can Use Sodium Citronellate
Sodium Citronellate suits most skin types, especially normal, combination and oily skin because of its oil balancing nature. Acne-prone users often appreciate the light antimicrobial support. Those with very dry or eczema-prone skin might find frequent use a bit drying so they may prefer formulas where the ingredient appears lower on the list. Sensitive skin can usually tolerate it at cosmetic levels, yet fragrance sensitive individuals should monitor for any discomfort since the molecule also has an aromatic role.
The ingredient is vegan and vegetarian friendly because it is either sourced from plant-derived citronellic acid or produced synthetically without animal inputs or byproducts.
No specific red flags exist for pregnant or breastfeeding women at the trace percentages typically found in skincare and haircare. Research is limited so this information is not medical advice and anyone who is pregnant or nursing should clear any new product with a healthcare professional first.
Sodium Citronellate does not make skin more sensitive to sunlight so it is not considered photosensitizing. Standard daytime sun protection is still advised as part of a good routine.
Potential Side Effects/Adverse Reactions
Reactions to topical Sodium Citronellate vary from person to person. The points below outline potential side effects that are unlikely for the average user when the ingredient is used correctly in a finished product.
- Mild skin dryness or a feeling of tightness, especially with frequent use on already dry skin
- Contact allergy that may appear as redness, itching or small patches of rash
- Eye irritation if the product accidentally migrates into the eye area
- Scalp dryness or itch when used in leave-on hair or scalp treatments
If you notice any of these effects stop using the product and consult a healthcare professional if symptoms persist or worsen.
Comedogenic Rating
Rating: 1 out of 5. Sodium Citronellate is a small, water-soluble salt that rinses away easily and does not leave an oily film so it is very unlikely to clog pores. It is therefore generally suitable for people who are prone to acne or breakouts. Because it often appears at low concentrations and is usually paired with lightweight textures there is minimal risk of pore blockage even when layered with richer products.
Summary
Sodium Citronellate acts as an anti-seborrheic agent that helps control surface oil, an antimicrobial that curbs the growth of odor-causing or blemish-related microbes and a light citrus-floral fragrance that freshens the overall scent of a formula. It manages these tasks by being a mild surfactant-like salt that disrupts microbial membranes and by contributing a naturally zesty aroma derived from citronella plants.
While it is not as mainstream as familiar ingredients like salicylic acid or tea tree oil, it has carved out a steady following in clean beauty circles and in products that aim for multitasking minimalism.
Current data and long-standing use point to a high safety profile at cosmetic levels with only occasional reports of minor dryness or irritation. As with any new skincare component, it is wise to patch test a product containing Sodium Citronellate before applying it to a larger area just to be on the safe side.