Citric Acid Descaling Powder Made in Japan - PLEASE UNDERSTAND THAT THIS IS A JAPANESE DOMESTIC PRODUCT SO THE PACKETS ARE IN JAPANESE ONLY! No English on package! Please refer to product description below for instructions on using the 100 % Citric Acid Packets! 4 - 1 ounce packets in box / Normally, 1 packet is recommended to descale your hot water kettle or coffee machine If in doubt, just follow the Manufacturer's Descaling instructions for your specific product. Dissolves hard water deposits efficiently and quickly