Science
Mechanism of Action
Furanocoumarins like xanthotoxin, when activated by UVA light, intercalate into DNA, forming adducts that stimulate melanogenesis and inhibit keratinocyte proliferation. This action contributes to repigmentation and can treat conditions like vitiligo.
Research
Clinical Evidence
Low confidence0.3%
Key findings
- 01 Clinical trials show oral or topical Ammi Majus Extract with UV exposure induces repigmentation in vitiligo, but with significant inflammatory side effects.
- 02 Topical formulations typically use 0.3% - 1.0%; higher concentrations increase phototoxicity without proportional benefit.
Transparency
Dusting Analysis
Ammi Majus Extract is highly phototoxic and banned in the EU for cosmetic use, making it unsuitable for general dusting in formulations. Its severe side effects prevent common inclusion in minimal concentrations.
The Formula
Formulation
Stability
Active furanocoumarins are heat-labile and light-sensitive, requiring cool, dark storage. Photodegradation accelerates at pH levels above 7.0.
Conflicts
- UVA light (causes toxic reaction)
- Strong oxidizing agents
- Alkaline environments (pH > 8.5)
Safety
Safety Profile
Banned in the EU (Annex II/35) due to high phototoxicity. Exposure to sunlight after application causes severe phytophotodermatitis, including blistering and hyperpigmentation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to its severe phototoxicity, EU ban for cosmetic use, and high irritancy risk, Ammi Majus Extract should be avoided in cosmetic formulations.
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References
Sources