Mentha Longifolia Flower/Leaf/Stem Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Mentha Longifolia Flower/Leaf/Stem Extract?

Mentha Longifolia Flower/Leaf/Stem Extract comes from the aerial parts of Mentha longifolia, a wild mint that grows across Europe, Asia and Africa. The plant has a fresh, herbaceous aroma and is naturally rich in polyphenols, flavonoids and small amounts of essential oils, all of which give it strong antioxidant properties.

Mint species have been used for centuries in herbal infusions and skin soothing balms, but cosmetic labs began exploring Mentha longifolia in the late 1990s as formulators searched for plant based antioxidants that could rival synthetic ones. By carefully extracting the flowers, leaves and stems, chemists found a balanced profile of water-soluble compounds that help shield skin from environmental stress.

The extract is usually produced through gentle solvent extraction or a water-glycerin maceration. The plant material is soaked, the active components dissolve into the liquid, then the mixture is filtered and concentrated to create a stable, preservative-ready ingredient that blends easily into both water-based and emulsified products.

You will most often see Mentha Longifolia Flower/Leaf/Stem Extract in toners, daily moisturizers, soothing face masks, lightweight serums, after-sun gels and anti-aging treatments where brands want to claim natural antioxidant support.

Mentha Longifolia Flower/Leaf/Stem Extract’s Cosmetic Benefits/Uses

This botanical is valued in skin care for one main action.

As an antioxidant it helps neutralize free radicals generated by UV light, pollution and daily stress so it can support a brighter, healthier-looking complexion and may enhance the overall stability of the formula by protecting other delicate ingredients.

Who Can Use Mentha Longifolia Flower/Leaf/Stem Extract

This extract is generally suitable for all skin types, including oily, combination, normal and dry skin, thanks to its lightweight water soluble nature that will not clog pores or leave a greasy film. Most sensitive skin users also tolerate it well because the extraction process removes most of the fragrant menthol compounds, though anyone with a known mint allergy or extremely reactive skin might prefer to proceed cautiously.

As a plant derived ingredient it is appropriate for both vegetarians and vegans. No animal by-products are involved in the cultivation, harvesting or extraction process.

Topical use is considered low risk for women who are pregnant or breastfeeding because systemic absorption is minimal. This is not medical advice and anyone who is expecting or nursing should show the full ingredient list of any skincare product to their doctor to be on the safe side.

The extract does not make skin more sensitive to sunlight so there is no added risk of photosensitivity. It layers well with common actives such as niacinamide, hyaluronic acid and gentle exfoliating acids.

Potential Side Effects/Adverse Reactions

Individual responses to Mentha Longifolia Flower/Leaf/Stem Extract can vary. The issues below are potential side effects but they are uncommon when the ingredient is used correctly in a finished cosmetic formula.

  • Skin irritation or redness
  • Mild stinging or tingling on application
  • Allergic contact dermatitis in people sensitive to mint or Lamiaceae family plants
  • Dryness or tightness if used in an overly astringent formula
  • Interaction with potent actives such as high percentage retinoids that may amplify irritation

If any of these effects occur stop using the product and consult a healthcare professional or dermatologist.

Comedogenic Rating

Comedogenic rating: 0. Mentha Longifolia Flower/Leaf/Stem Extract is water based and contains virtually no heavy oils or waxy residues that could block pores. Its antioxidant polyphenols and flavonoids are small molecules that rinse away easily and do not leave an occlusive film, making the extract a safe pick for people who are prone to acne or breakouts.

The ingredient is typically used at low percentages in lightweight gels, toners or serums so it is unlikely to build up on skin over time. Its soothing antioxidant action can also help keep the surface environment calm which may further support blemish prone complexions.

Summary

Mentha Longifolia Flower/Leaf/Stem Extract works mainly as an antioxidant, neutralizing free radicals produced by UV exposure, pollution and daily stress. This supports a brighter more resilient complexion and helps protect other sensitive ingredients in a formula.

Although it is not as well known as heavy hitters like vitamin C or green tea the extract is quietly becoming popular with brands that want a mild plant based antioxidant with low scent and low irritation risk. Expect to spot it in soothing masks hydrating toners and lightweight moisturizers aimed at sensitive, normal or combination skin.

Safety is considered high. The extract is vegan friendly, non comedogenic and generally well tolerated with only rare reactions in people allergic to mint. Still, it is smart to patch test any new product that features it to confirm your personal compatibility.

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