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An Eco-Friendly Photostabilizer from Sytheon


Synoxyl HSS imparts a multitude of benefits to sun care formulas.

Sytheon Ltd.'s Synoxyl HSS (INCI: Trimethoxybenzylidene pentanedione) is an innovative photo-stabilizer and in-vivo SPF booster with proven antioxidant properties, according to the company.

Based on substituted benzylidene 2,4-pentanediones, Synoxyl
 HSS is said to give formulators a superior performing, multifunctional ingredient. For example,  Synoxyl HSS stabilizes avobenzone better than octocrylene, according to Sytheon. Furthermore, Synoxyl HSS boosts in-vivo SPF by 50% or more for both organic and inorganic sunscreens when alone it has no in-vivo SPF contribution.

Finally, Synoxyl HSS is estimated to biodegrade fully in six weeks.

More info: Sytheon Ltd.,Tel: 973-988-1075; Email:; Website: