It is an advanced version 1-component resin that cures with both LED light and UV light. "Star Drop" does not have yellowing due to aging that has been observed in conventional UV resins, and maintains a beautiful transparency for a long time. "Star Drop" cures very quickly, so work is faster. The estimated curing time is 30 seconds to 90 seconds (depends on the thickness of the work etc.) You can replace the nozzle of "Star Drop" Hard 25g (Model No .: 403236) and use it as it is. "Star Drop" cures with both LED light and UV light, but when using LED light, either LED wavelength "405nm" or "365nm" wavelength is required. The separately sold special light “UV-LED smart light (Model No .: 403238)” can be used safely with these two wavelengths. There is no concern that the "Star Drop" will cure as different wavelengths are used for household LED lighting. When using UV light, use 36 W UV light (curing time 2 minutes to 4 minutes). PADICO is a Japanese company that develops and sells molding materials centered on clay and UV resin. Only the materials selected for safety are used in PADICO products, and the safety of the products themselves is also confirmed. Their high safety and quality are highly regarded. The Art of Having Fun. Making our dreams and creative imaginations come to life. This idea has fascinated us humans for many years. What would you like to create? For whom, how, using what? We introduce the potentiality of art that has an effect on society, people, and our living environment through producing modeling clay and other plastic arts and crafts material at Padico.