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Moumoujus

MENTHA PIPERITA LEAF JUICE.

Valuable CAS 84082-70-2 / SKIN CONDITIONING

Mentha Piperita Leaf Juice is a multi-functional botanical extract offering antioxidant, antimicrobial, and anti-inflammatory benefits to the skin. It provides a distinct cooling sensation and helps refine the appearance of oily and normal skin by acting as an astringent and promoting microcirculation.

Summary

Antioxidant Antimicrobial Antiseptic Anti-inflammatory Astringent Cooling Agent Microcirculation Enhancer Wound Healing Support Anti-aging Support Penetration Enhancer Skin Conditioning

Science

Mechanism of Action

This ingredient functions as an antioxidant by neutralizing free radicals, thereby protecting skin from oxidative damage. Its antimicrobial and antiseptic properties support a healthy skin environment. As an anti-inflammatory agent, it aids in calming irritation and reducing redness. The characteristic cooling effect is primarily due to menthol, which activates the TRPM8 cold-sensitive channel. It also exhibits an astringent effect, assisting in tightening pores and balancing sebum production for oily skin types, and can enhance microcirculation for a brighter complexion. Furthermore, *in vitro* data suggests it can increase TGF-β gene expression to support wound healing and suppress ATP release from epidermal keratinocytes, potentially reducing dermal thinning and wrinkle formation. Menthol, a key component, may also enhance the skin penetration of other active ingredients.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 In vitro studies have demonstrated that Mentha Piperita Leaf Extract can increase TGF-β gene expression, which supports wound healing processes. It has also been shown to suppress ATP release from epidermal keratinocytes, suggesting a potential role in reducing dermal thinning and wrinkle formation.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 6.5
0 7 14

Stability

Optimal stability for Mentha Piperita Leaf Extract is reported within a pH range of 4.0 to 6.5.

Synergies

  • Menthol, a primary component, can enhance the transdermal penetration of other skincare ingredients, potentially boosting their efficacy.

Conflicts

  • Ingredients whose safety relies on limited systemic absorption should be carefully evaluated when combined with Mentha Piperita Leaf Juice due to menthol's penetration-enhancing properties.
  • High concentrations of this ingredient may cause irritation in individuals with sensitive skin, primarily due to its menthol content.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
1%
Sensitization risk Moderate

Mentha Piperita Leaf Juice is deemed safe for cosmetic use by the CIR Expert Panel, provided that the concentration of pulegone, a natural constituent, does not exceed 1%. The U.S. FDA also recognizes it as Generally Recognized As Safe (GRAS) for food consumption. While *in vitro* tests showed Mentha Piperita Leaf Extract to be non-irritating at 10% and 100% concentrations, isolated clinical reports of irritation and/or sensitization to Peppermint Oil or its components have been documented. Formulators should be aware that menthol can enhance the penetration of other agents, necessitating careful safety assessment of co-ingredients.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Mentha Piperita Leaf Juice is a valuable multi-functional ingredient offering significant antioxidant, anti-inflammatory, and cooling benefits, particularly suited for oily and normal skin, but requires careful formulation to adhere to pulegone concentration limits and manage potential irritation for sensitive individuals.

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