Mentha Aquatica 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 Aquatica Flower/Leaf/Stem Extract?

Mentha Aquatica Flower/Leaf/Stem Extract comes from the flowers, leaves and stems of water mint, a fragrant herb that grows along stream banks and ponds throughout Europe and parts of Asia. The plant is naturally rich in menthol, flavonoids, phenolic acids and small amounts of essential oils, all of which give the extract its fresh scent and skin-friendly profile. Historically water mint was crushed into baths and herbal rubs to cool the skin and impart a clean aroma, and modern formulators picked up on those traditional uses when looking for botanical ingredients that feel light and refreshing.

The extract is usually produced by harvesting the aerial parts of the plant at peak bloom, then drying and macerating them in a gentle food-grade solvent such as water, glycerin or a mix of water and alcohol. After steeping, the liquid is filtered and concentrated, yielding a clear to pale green solution that blends easily into water-based cosmetic formulas.

Because of its mild yet invigorating nature the extract turns up in toners, mists, lightweight moisturizers, gel masks, after-sun lotions, scalp and hair refreshing sprays, deodorant sticks and even some anti-blemish spot treatments where a cooling touch is welcome.

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

This botanical is valued in skin care for one primary role: skin conditioning. By delivering trace antioxidants and soothing compounds it helps leave the surface feeling softer and more comfortable. Its natural menthol-like molecules provide a gentle fresh sensation that can make a formula feel calming on overheated or tired skin, while the plant polyphenols support a smoother appearance over time.

Who Can Use Mentha Aquatica Flower/Leaf/Stem Extract

Thanks to its light texture and soothing profile Mentha Aquatica Flower/Leaf/Stem Extract generally suits normal, oily, combination and mildly sensitive skin. The cooling feel can be especially pleasant for oily or overheated complexions. Those with very dry or easily inflamed skin, particularly individuals prone to rosacea, may find the menthol-like tingle a little stimulating and might prefer to use it in lower concentrations or avoid it if they notice discomfort.

The extract is botanical and contains no animal-derived components, so it is considered appropriate for both vegetarians and vegans when used in formulations that are otherwise free of animal ingredients.

Current safety data shows no specific red flags for pregnancy or breastfeeding when the ingredient is used topically at typical cosmetic levels. Still, this is not medical advice. Anyone who is pregnant or nursing should show the full ingredient list of any product they plan to use to a qualified healthcare provider for personalized guidance.

The plant does not increase skin sensitivity to sunlight, so it is classified as non-photosensitizing. It also plays well with common actives like niacinamide and gentle exfoliating acids, making it a versatile option in multi-step routines.

Potential Side Effects/Adverse Reactions

Individual responses to Mentha Aquatica Flower/Leaf/Stem Extract vary. The points below outline possible, though uncommon, reactions when the ingredient is applied to the skin. When properly formulated most users will not experience issues.

  • Mild stinging or heightened cooling sensation on very sensitive or compromised skin
  • Temporary redness or irritation around the eyes if a product migrates into the eye area
  • Contact dermatitis in people with an existing allergy to mint or Lamiaceae family plants
  • Dryness or tightness when used in high concentrations or layered repeatedly without adequate moisturizing follow-up
  • Scalp sensitivity such as itching or flaking if used in leave-on hair products by those with fragile scalp barriers

If any discomfort, persistent redness or rash develops stop using the product and seek advice from a healthcare professional.

Comedogenic Rating

Rating: 1 (very low likelihood of clogging pores)

Mentha Aquatica Flower/Leaf/Stem Extract is water-based and contains almost no heavy oils or waxes, so it does not sit in the pore the way thicker emollients can. The small amount of volatile menthol-type compounds may feel tingly but they evaporate quickly instead of building up on the skin. For these reasons the extract is generally considered safe for acne-prone or breakout-prone skin.

Keep in mind that the overall pore-friendliness of a finished product also depends on the other ingredients and the formula’s texture.

Summary

Mentha Aquatica Flower/Leaf/Stem Extract is mainly used to condition the skin, helping it feel soft, fresh and comfortable. Its natural menthol-like molecules create a mild cooling sensation while plant antioxidants support a smoother look over time.

The extract shows up in toners, mists, gel creams and scalp sprays but it is still a niche botanical rather than a mainstream staple. Formulators who want a light refreshing twist often choose it for that reason.

Topical use at normal cosmetic levels is considered low risk with only rare reports of irritation in mint-sensitive individuals. As with any new skin care ingredient it is smart to do a quick patch test before full use so you can be sure your skin agrees with it.

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