Common Name(s): Platonin,platonin,cationic porphyrin antioxidant,singlet oxygen quenching anti-inflammatory
CAS Number: N/a
DESCRIPTION
What It Does: Provides exceptional singlet oxygen quenching from the extended porphyrin tetrapyrrole conjugation (rate constant approaching diffusion limit), anti-inflammatory nf-kb modulation, and antioxidant radical scavenging.
Why It's Used: Porphyrin singlet oxygen quenching is among the fastest known โ the extended pi-conjugation provides energy transfer from ยนoโ to the porphyrin excited state with rate constants near the diffusion limit (10โน mโปยนsโปยน) for superior photoprotection.
How It Works: Porphyrin macrocycle: ยนoโ โ dexter energy transfer to porphyrin ฯ-ฯ* state โ triplet porphyrin โ ground state + heat (physical quenching); or ยนoโ + porphyrin โ chemical quenching products. cationic charge: electrostatic interaction with anionic bacterial/pathogen membranes โ potentiates pdt antimicrobial. nf-kb: porphyrin intercalation with ikk regulatory subunit.
Typically Found In: Anti-aging,antioxidant,photoprotection
TECHNICAL DETAILS
Primary Category: Active ingredient โ antioxidant
Secondary Functions: Free radical scavenging,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.001%โ0.1%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Plant-derived extract or synthetic.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; well-tolerated.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Porphyrin photosensitiser caution: porphyrins absorb strongly in the visible range (soret band ~420 nm) and can generate ยนoโ under uv/visible light โ avoid high concentrations in leave-on sun-exposed products without demonstrated photostability; rinse-off applications preferred.
Last Verified: 2026-03-22
Primary Sources: Cosing database,platonin cationic porphyrin singlet oxygen anti-inflammatory review