The first two love flushes worked on clearing out old emotional wounds and bringing in the energy of unconditional love. Love Flushes 3 & 4 work more specifically on relationship issues by clearing out wounds from past relationships and healing current relationships. It is recommended, but not required, to receive Love Flushes 1 & 2 first, available here: http://www.elementalreiki.com/loveflush You will receive two attunements and a concise PDF manual.