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Moumoujus

LAURUS NOBILIS LEAF EXTRACT.

Avoid CAS 84603-73-6 / FRAGRANCE, REFRESHING, TONIC

Laurus Nobilis Leaf Extract, derived from bay laurel leaves, is a rich source of polyphenolic compounds. It offers multifaceted skin benefits, including potent antioxidant and anti-inflammatory actions, alongside properties that stimulate collagen production.

Summary

antioxidant anti-inflammatory antimicrobial astringent collagen booster wound healing masking refreshing tonic

Science

Mechanism of Action

This extract functions via its abundant polyphenolic compounds, such as flavonoids and phenolic acids, which act as powerful antioxidants, mitigating oxidative stress and premature skin aging. Its antimicrobial effects target acne-causing bacteria, while significant anti-inflammatory modulation occurs through the suppression of the NLRP3 inflammasome activation pathway. Furthermore, it possesses astringent qualities to help refine pores and manage sebum, exhibits wound healing capabilities, and demonstrably promotes collagen synthesis.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Bay leaf extract has been shown to boost collagen production by over 350%, contributing to the smoothing of deep wrinkles.
  2. 02 In mouse bone marrow-derived macrophages, Laurus nobilis leaf extract successfully inhibited NOD-like receptor pyrin domain-containing 3 (NLRP3) inflammasome activation, a process linked to caspase-1 activation, interleukin-1β secretion, and pyroptosome complex formation.
  3. 03 The extract attenuated the in vivo expression of proinflammatory cytokines within an acute lung injury mouse model.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.1%

While displaying impressive potential benefits such as significant collagen boosting, the maximum recommended safe concentration for topical use is extremely low at 0.1% due to its classification as a contact allergen and irritant. Formulating for high efficacy claims while strictly adhering to this safety limit presents a significant challenge for precision skincare, as the concentrations required for the reported benefits are not specified.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

The active phenolic compounds, particularly flavonoids, are thermolabile and susceptible to degradation at elevated temperatures during both extraction and formulation. Optimized extraction methods often utilize ethanol and water mixtures to maximize the recovery and stability of these bioactive constituents.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.1%
Pregnancy
Caution
Sensitization risk High

Although Generally Recognized As Safe (GRAS) as a food additive by the US FDA, the European Commission's SCCS identifies Laurus Nobilis Leaf Extract as an established human contact allergen, and the ECHA indicates potential for allergic skin reactions and skin irritation. A related ingredient, Laurus Nobilis Leaf Oil, has shown irritation at concentrations as low as 1%. Therefore, this extract should be used with extreme caution, diluted to very low concentrations (up to 0.1%), and explicitly avoided by pregnant women, children, and individuals with sensitive skin.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Despite compelling in-vitro and animal model data suggesting potent anti-aging, anti-inflammatory, and antimicrobial benefits, the significant risk of skin irritation and allergic reactions, coupled with a very low maximum safe concentration, makes this ingredient unsuitable for precision skincare formulations.

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