Ingredient review
Sodium Citronellate
INCI: SODIUM CITRONELLATE
A mild, natural-origin surfactant and scent ingredient that helps cleanse and lightly fragrance products, but may cause sensitivity in those allergic to citronella or related botanicals.
In plain English
Sodium Citronellate is a soap-like ingredient made from citronellal, a compound found in citronella and other plant oils. It helps water mix with oil and dirt so they can be rinsed away, and it also adds a fresh, citrusy scent. Because it's derived from a fragrant plant oil, it can be a mild skin irritant for people with very sensitive skin or allergies to citronella.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- natural
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium Citronellate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Sodium Citronellate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Sodium Citronellate is the sodium salt of citronellic acid, a fatty acid naturally present in citronella oil and other essential oils. It is produced by reacting citronellal with an alkali, creating a mild surfactant that also contributes a characteristic lemony scent.
How it works
In a cosmetic product, Sodium Citronellate acts as a surfactant, reducing the surface tension between water and oils so that dirt and sebum can be lifted away and rinsed off. It also functions as a fragrance ingredient, providing a fresh, citrus-like aroma that can enhance the sensory experience of cleansers and soaps.
Pros
Mild cleansing
Sodium Citronellate provides gentle cleansing that effectively removes dirt and oil without stripping the skin's natural moisture barrier, making it suitable for daily use.
Natural fragrance
It imparts a pleasant, natural citrus scent derived from plant sources, reducing the need for synthetic fragrances that can be more irritating.
Cons and cautions
Potential allergen
Because it is derived from citronellal, it can trigger allergic reactions or contact dermatitis in people sensitive to citronella, lemongrass, or related essential oils.
Limited research
There is less published safety data for Sodium Citronellate compared to more common surfactants, so its long-term effects at higher concentrations are not fully understood.
Best for
- People looking for a natural-origin surfactant in their cleansers
- Those who enjoy light, citrus-scented personal care products
Use caution if
- Individuals with known allergies to citronella, lemongrass, or other plants in the Cymbopogon family
Usage tips
Safety summary
Sodium Citronellate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential for most people, but those with allergies to citronella or related botanicals should exercise caution. Regulatory bodies and industry safety panels have set usage limits to reduce sensitization risk.
Research notes
Research on Sodium Citronellate specifically is limited, but it is chemically related to citronellic acid and citronellal, which have been studied for their antimicrobial and fragrance properties. Safety assessments by the Cosmetic Ingredient Review (CIR) and IFRA provide guidance on safe usage levels based on analog data.
Common label clues
- Typical concentration
- Typically used at 0.1–2% in rinse-off products; lower in leave-on formulas.
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. The International Fragrance Association (IFRA) has set usage limits for citronellal derivatives in fragranced products to minimize sensitization risk.
- Common uses
- Cleansers, Body washes, Shampoos, Bar soaps, Fragranced products
- Environmental note
- Derived from renewable plant sources, but the environmental impact of cultivation and processing varies. It is biodegradable and generally considered low-risk for aquatic ecosystems at typical use levels.
Good to know
- Sodium Citronellate is often listed near the end of ingredient lists, indicating it is used in small amounts.
- It is not the same as citronella oil; it is a purified derivative that may be less likely to cause irritation than the whole essential oil.
Common questions
What is Sodium Citronellate in beauty products?
Sodium Citronellate is a soap-like ingredient made from citronellal, a compound found in citronella and other plant oils. It helps water mix with oil and dirt so they can be rinsed away, and it also adds a fresh, citrusy scent. Because it's derived from a fragrant plant oil, it can be a mild skin irritant for people with very sensitive skin or allergies to citronella.
What does Sodium Citronellate do in a beauty product?
In a cosmetic product, Sodium Citronellate acts as a surfactant, reducing the surface tension between water and oils so that dirt and sebum can be lifted away and rinsed off. It also functions as a fragrance ingredient, providing a fresh, citrus-like aroma that can enhance the sensory experience of cleansers and soaps.
Is Sodium Citronellate safe for most people?
Sodium Citronellate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential for most people, but those with allergies to citronella or related botanicals should exercise caution. Regulatory bodies and industry safety panels have set usage limits to reduce sensitization risk.
Who should be careful with Sodium Citronellate?
Individuals with known allergies to citronella, lemongrass, or other plants in the Cymbopogon family
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.