When heating the paste, either by microwave or oven, be absolutely sure the paste is just warm to the touch not hot. Otherwise burns to the skin may result. To determine where the eyebrows must start and end, hold a pencil vertically against the nose. Where pencil meets the eyebrow http://www.videovivo.it/web/viencanh/home/-/blogs/vi-sao-trung-tam-day-tieng-anh-toeic-o-a-nang-4life-english-uoc-nhieu-hoc-vien-yeu-thich-?