Ingredient review
Clove Stem Oil
INCI: EUGENIA CARYOPHYLLUS STEM OIL
Clove stem oil can add fragrance and antimicrobial benefits to skincare, but its high eugenol content makes it a common skin irritant and allergen.
In plain English
Clove stem oil is a concentrated essential oil pressed from the stems of the clove tree. It has a strong, spicy scent and contains a compound called eugenol, which can kill some bacteria and fungi. In skincare, it's used mainly for fragrance and occasionally to help with acne. However, because eugenol is a known skin sensitizer, clove oil can cause redness, stinging, or allergic reactions, especially if used undiluted or in high amounts. It's best used in very low concentrations in well-formulated products.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- natural
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Clove Stem Oil can be useful, but watch for some irritation potential.
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 Clove Stem Oil.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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
Clove stem oil is an essential oil obtained by steam distillation of the stems of Eugenia caryophyllus (clove). Its main active component is eugenol (70–90%), along with smaller amounts of other compounds like beta-caryophyllene and eugenyl acetate.
How it works
Eugenol in clove oil disrupts the cell membranes of certain bacteria and fungi, giving it mild antimicrobial activity. In a cosmetic product, it primarily serves as a natural fragrance ingredient, but its antimicrobial action can help preserve the formula or target acne-causing bacteria on the skin.
Pros
Natural antimicrobial
Clove stem oil can help reduce acne-causing bacteria, making it a useful addition to spot treatments or cleansers for oily skin.
Distinctive fragrance
Its warm, spicy scent is a natural alternative to synthetic fragrances in products like soaps, balms, and perfumes.
Cons and cautions
High irritation potential
Eugenol, the main component, is a common skin sensitizer. Even at low concentrations, it can cause redness, stinging, or allergic contact dermatitis in some people.
Allergen labeling required
In the EU, eugenol must be listed separately on the ingredient label, which can be off-putting for consumers avoiding common allergens.
Best for
- People with oily or acne-prone skin looking for a natural antimicrobial ingredient in low concentrations
- Those who enjoy spicy, warm fragrances in their skincare products
Use caution if
- Anyone with sensitive, reactive, or eczema-prone skin
- People with a known allergy to eugenol or balsam of Peru
Usage tips
Safety summary
Clove stem oil is safe for cosmetic use at low concentrations (typically under 1%), but its high eugenol content makes it a moderate irritant and a common allergen. It should be avoided by people with sensitive skin or known fragrance allergies. The EU requires eugenol to be labeled as a separate allergen.
Research notes
Studies confirm eugenol's antimicrobial activity against bacteria like Propionibacterium acnes and Staphylococcus aureus. However, clinical evidence for clove oil's efficacy in treating acne is limited, and most research focuses on eugenol's irritant and sensitizing potential. The Cosmetic Ingredient Review (CIR) panel has noted that eugenol is safe in cosmetics at low concentrations but can cause sensitization.
Common label clues
- Typical concentration
- Typically used at 0.1% to 1% in leave-on products; higher in rinse-off products
- Regulatory status
- Approved as a fragrance ingredient by IFRA with usage restrictions. In the EU, eugenol must be listed separately on the label when present above 0.001% in leave-on products or 0.01% in rinse-off products.
- Common uses
- Fragranced products, Acne treatments, Mouthwashes
- Environmental note
- Clove trees are widely cultivated in tropical regions, and clove stem oil production is generally considered sustainable when sourced from responsible farms. However, large-scale distillation can generate waste that needs proper management.
Good to know
- Clove stem oil is different from clove leaf oil and clove bud oil — the stem oil has a slightly different chemical profile and is generally considered less potent than bud oil.
- Eugenol is also found in cinnamon, nutmeg, and basil, so cross-reactivity is possible if you're allergic to those spices.
Common questions
What is Clove Stem Oil in beauty products?
Clove stem oil is a concentrated essential oil pressed from the stems of the clove tree. It has a strong, spicy scent and contains a compound called eugenol, which can kill some bacteria and fungi. In skincare, it's used mainly for fragrance and occasionally to help with acne. However, because eugenol is a known skin sensitizer, clove oil can cause redness, stinging, or allergic reactions, especially if used undiluted or in high amounts. It's best used in very low concentrations in well-formulated products.
What does Clove Stem Oil do in a beauty product?
Eugenol in clove oil disrupts the cell membranes of certain bacteria and fungi, giving it mild antimicrobial activity. In a cosmetic product, it primarily serves as a natural fragrance ingredient, but its antimicrobial action can help preserve the formula or target acne-causing bacteria on the skin.
Is Clove Stem Oil safe for most people?
Clove stem oil is safe for cosmetic use at low concentrations (typically under 1%), but its high eugenol content makes it a moderate irritant and a common allergen. It should be avoided by people with sensitive skin or known fragrance allergies. The EU requires eugenol to be labeled as a separate allergen.
Who should be careful with Clove Stem Oil?
Anyone with sensitive, reactive, or eczema-prone skin People with a known allergy to eugenol or balsam of Peru
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.