TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The disinfecting agent is chlorine dioxide; or chlorine dioxide precursor, which is sodium chlorite, potassium chlorite, lithium chlorite, magnesium chlorite, or barium chlorite. The pH adjuster is citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, monopotassium phosphate, boric acid, and/or borax.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The chelating agent is EDTA, EDTA disodium salt, or EDTA tetrasodium salt.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The shampoo comprises (pts.wt.) surfactant (15-55, preferably 20-50), chelating agent (0.02-0.4, preferably 0.05-0.3), humectant (3-15, preferably 5-10), regulating agent (2-15, preferably 5-10), thickening agent (2-15, preferably 5-10), chlorine dioxide or chlorine dioxide precursor (0.002-4, preferably 0.004-3), pH adjuster, which adjusts the pH to 5.5-7.5, and deionized water (balance to 100). The surfactant is sodium lauryl sulfate, ammonium lauryl sulfate, sodium lauryl alcohol ether sulfate, ammonium lauryl alcohol ether sulfate, fatty alcohol-polyoxyethylene ether, N-lauroyl sodium sarcosinate, sodium methyl cocoyl taurate, cocoyl carboxymethyl imidazolium acetate, lauryl phosphate, lauryl phosphate kali salt, fatty alcohol-polyoxyethylene ether sulfosuccinates, sodium percarbonate, cocoyl isethionic acid sodium salt, sodium laureth-6 carboxylate, alkyl polyglucoside, lauryl betaine, lauryl propyl betaine, cocamidopropyl betaine, cocamidopropyl hydroxysultaine, lauryldimethylamine oxide, cocamidopropylamine oxide, and/or triethanolamine cocoyl glutamine. The humectant is glycerin, propanediol, butylene glycol, sorbitol, sodium pyrrolidone carboxylate, hyaluronic acid, methyl glucoside polyoxyethylene ether, lactic acid, sodium lactate, ceramide, water soluble jojoba oil, water soluble vitamin E, polyoxyethylene-75-wool grease, and/or polyethylene glycol-75-wool grease. The regulating agent is cetyl trimethylammonium chloride, octadecyl trimethylammonium chloride, behentrimonium methosulfate, Arquad 316 (RTM: tricetylmonium chloride), cationic cellulose polymer, cationic guar gum, polyquat. amine, Salcare 96 (RTM: ethanaminium N,N,N-trimethyl-2-((methyl-1-oxo-2-propenyl)oxy)chloride homopolymer), Salcare 60 (RTM: acrylamidopropyltrimonium chloride/acrylamide copolymer), polyoxyethylene ether polymer, water soluble silicone oil, emulsified silicone oil, vitamin B5, vitamin B6, phytantriol, Aloe extract solution, silk amino acid, semen sesami nigrum extract, chitosan, and/or quat. ammonium protein or high fatty alcohol. The thickening agent is hydroxyethylcellulose, carboxymethylcellulose, polyvinylpyrrolidone, acrylic acid copolymer, acrylic ester copolymer, polyethylene glycol (PEG)-150 distearate, PEG 6000 distearate, PEG-120 methyl glucoside, xanthan gum, seaweed gel, carbomer, sodium chloride, crosslinked polyacrylic ester, methyl vinyl ether, coconut oil fatty acid monoethanolamine, Tinovis ADM (RTM: sodium acrylates copolymer (and) mineral oil (and) polypropylene glycol-1 trideceth-6), and/or crosslinked copolymer of acrylate and vinyl pivalate. ACTIVITY - Dermatological; Antipruritic; Fungicide.