This specification provides a light source radiation apparatus for radiating light, a kit for lipolysis having a manual describing a method for dissolving fat by radiating light, and a slimming method for radiating light to skin. According to the specification, the present invention can dissolve neutral fat in a fat cell by radiating light of a wavelength in a range of light harmless to the body, thus can safely and effectively dissolve fat, and can be used for the slimming method by having the advantage of being more economical and convenient than a conventional lipolysis method.
