A-STIN

Issues on UV Filters

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Inorganic (Physical)	Organic (Chemical)
Whitening effect Bad sensory (powdery, rough feel) Difficult to formulate (hard to disperse) Nanoparticle concern	Allergy-ubdyced (skin irritation)⁽¹⁾ Ecosystem contamination and endocrine disruption⁽²⁾ Bad sensory (greasy feel, shiny look) Different regulation by region and country⁽³⁾ Recrystallization (e.g. Bemotrizinol, Avobenzone…) No direct use in water-phase (need solvent)

(1) No prefer PABA and PABA derivatives
(2) Ban on sunscreen contained oxybenzone and octinoxate in Hawaii, U.S.
(3) Not approved BEMT and DHHB in U.S. and Canada

RUVEX (Reduce UV-radiation exposure!)

RUVEX is a new concept of UV filter for enhancing advantages of organic UV filter while eliminating shortcomings of inorganic UV filters.
The product is based on trapping technology that traps organic UV filter to prevent leakage of them, which block UVA and UVB on silica pores. The product is designed in multi-layer structure to prevent direct contact of organic, chemical materials causing allergy on the skin. The product is of UV filter material that continuously improves efficiency and persistence of ultraviolet protection and reduces skin irritation, and is adequate for sensitive skins accordingly.