Jin.B Coolear Non Heating Builder Gel (3 types 25g)Jin. B Coolear Non heating gel comes in 3 types all non heating and non yellowing : Standard Type with the perfect viscosity ideally used for overylays and nail extensions. Also can be recommended for a glitter overlay. Thick Type with a slightly thicker viscosity than the standard type , the Thick type is best used for extensions. Hold Type this type has the highest viscosity. The hold type is best used for problematic nails due to its holding power.