The source introduces SOS Advance, described as a natural botanical elixir designed to support the body's detoxification processes and overall wellness. It highlights that the product aims to cleanse blood and organs, bolster the immune system, and promote an alkaline environment. The text details the various plant oils and extracts included in the formula and mentions the use of nano-technology to enhance their absorption. Finally, it notes user experiences and underscores that SOS Advance is a food supplement, not a medicine, encouraging consultation with healthcare professionals.