Ethylhexyl Triazone

• Ethylhexyl Triazone (also known as Uvinul® T 150) is a highly efficient, oil-soluble organic UV filter commonly used in sunscreens and cosmetic formulations.
• INCI Name: Ethylhexyl Triazone
• Trade Name: Uvinul® T 150 (by BASF)
• Appearance: crystalline powder or viscous liquid
• Solubility: Oil-soluble (insoluble in water)
• Typical Use Level: 0.5–5%
• Formulation Type: Oil phase of emulsions (O/W or W/O), sunscreens, day creams, and makeup with SPF.

🧪 Function

Ethylhexyl Triazone is a UVB filter with an exceptionally high absorbance in the 290–330 nm range, providing strong protection against sunburn and UV-induced skin damage.

UV Absorption Peak: ~314 nm

Key Benefits

• Very high photostability — resists degradation even after prolonged sun exposure.
• High SPF efficiency — allows lower total UV filter concentrations for the same protection.
• Compatible with other UV filters like:
• Avobenzone (Butyl Methoxydibenzoylmethane) – for UVA coverage
• Octocrylene – to improve solubility and stability
• Tinosorb S (Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine) – for broad-spectrum protection
• Safe and non-irritating, even for sensitive skin types.

Formulation Tips

Must be dissolved in the oil phase (heated to ~80°C ).

Often used together with emollients or solubilizers like:

• C12-15 Alkyl Benzoate
• Caprylic/Capric Triglyceride
• Isoamyl Laurate

Not suitable for water-based or alcohol-based formulations alone.

Ethylhexyl Triazone is one of the most powerful UVB filters available, prized for its photostability and high SPF contribution in modern sunscreens. It works best in combination with other filters to achieve broad-spectrum protection.