A month or so ago, I came across a posting at http://www.gov.ph/forum/ which announced free seminars on dishwashing liquid and others and I, on pure curiousity, found a way to attend. The seminars turned out to be a quick sessions on how to mix pre-formulated substances to produce them dishwashing liquid, fabric conditioner, handwash, carwash, even perfumes, at just 25% percent, even less, of the selling price of commonly known brands like Joy, Downy, etc.  More info at Pinoy Seminars!