TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Propellant: This is propane, butane, dimethyl ether or a fluorinated hydrocarbon.Preferred Surfactants: These include alkyl dimethyl benzyl ammonium compounds, alkyl trimethyl ammonium compounds alkyl dimethyl hydroxyethyl ammonium compounds, dialkyl dimethyl ammonium compounds, alkylpyridinium salts, alkylamidoethyl trimethyl ammonium ether sulfates, alkyl methyl amine oxides, alkylaminoethyl dimethyl amine oxides, amidoamines and quaternized amidoamines.Preferred Oils: These include fatty alcohols, fatty acid esters, mineral oils, isoparaffins, paraffin oils squalane and vegetable oils.Preferred Composition: Other ingredients include emulsifiers and photoprotective agents.Preferred Emulsifiers: These include sucrose fatty acid esters, sorbitan fatty acid esters and alkyl glycosides.Preferred Photoprotective Agents: These are 2-ethylhexyl 4-methoxycinnamate, methyl methoxycinnamate, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and polyethoxylated p-aminobenzoates.    TECHNOLOGY FOCUS - POLYMERS - Preferred Silicones: These are cyclic dimethylsiloxanes, linear polydimethylsiloxanes, block polymers of polydimethylsiloxane and polyethylene oxide und/ or polypropylene oxide, polydimethylsiloxane with terminal or pendant polyethylene oxide or polypropylene oxide groups, hydroxy-terminal polydimethylsiloxanes, phenyl-substituted polydimethylsiloxanes, silicone emulsions, silicone elastomers, silicone waxes, silicone rubbers, amine-substituted silicones and quaternary ammonium-substituted silicones.Preferred Composition: Other ingredients include thickening polymers, anionic polymers, amphoteric polymers, cationic polymers, polymer additives and emulsifiers.Preferred Anionic Polymers: These are terpolymers of acrylic acid, ethyl acrylate and n-tert-butylacrylamide; vinylacetate/crotonic acid copolymers; terpolymers of tert-butyl acrylate, ethyl acrylate and methacrylic acid; sodium polystyrene sulfonate; copolymers of vinylacetate, crotonic acid and vinyl propionate: copolymers of vinylacetate, crotonic acid and vinyl neodecanoate; aminomethylpropanol acrylate copolymers; copolymers of vinylpyrrolidone and (meth)acrylic acid and/or (meth)acrylate esters; copolymers of methyl vinyl ether and maleic acid monoalkyl esters; aminomethylpropanol salts of copolymers of allyl methacrylate and (meth)acrylic acid and/or (meth)acrylate esters; crosslinked copolymers of ethyl acrylate and methacrylic acid; copolymers of vinylacetate, mono-n-butyl maleate and isobornyl acrylate; copolymers of (meth)acrylic acid and/or (meth)acrylate esters; copolymers of octylacrylamid and (meth)acrylic acid and/or (meth)acrylate esters; polyesters of diglycol, cyclohexandimethanol, isophthalic acid and sulfoisophthalic acid.Preferred Cationic Polymers: These are derivatives of hydroxyethylcellulose and diallyldimethylammonium chloride; derivatives of hydroxyethylcellulose and trimethylammonium-substituted epoxide; poly(dimethyldiallylammonium chloride); copolymers of acrylamide and dimethyldiallylammonium chloride; quaternary ammonium polymers formed by reacting diethyl sulfate and a copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate; quaternary ammonium polymers of methylvinylimidazolium chloride and vinylpyrrolidone; polyquaternium-35; polymer of trimethylammoniumethyl methacrylate chloride; polyquaternium-57; dimethylpolysiloxanes with terminal quaternary ammonium groups; copolymers of vinylpyrrolidone, dimethylaminopropyl methacrylamide and methacryloylaminopropyl lauryldimethylammonium chloride; chitosan; hydroxyalkylchitosans; alkyl hydroxyalkyl chitosans; N-hydroxyalkyl chitosan alkyl ethers; copolymers of vinylcaprolactam, vinylpyrrolidone and dimethylaminoethyl methacrylate; copolymers of vinylpyrrolidone and dimethylaminoethyl methacrylate, copolymers of vinylpyrrolidone, vinylcaprolactam and dimethylaminopropylacrylamide; poly- or oligoesters of quaternary ammonium-substituted hydroxy acids.Preferred Amphoteric Polymers: These are copolymers of octylacrylamide, acrylic acid, butylaminoethyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate; copolymers of lauryl acrylate, stearyl acrylate, ethylaminoxidmethacrylate (sic) and (meth)acrylic acid and/or (meth)acrylate esters; copolymers of methacryloylethyl betaine and methacrylic acid and/or methacrylate esters; copolymers of acrylic acid, methyl acrylate and methacrylamidopropyl trimethylammonium chloride; oligomers or polymers of quaternary crotonbetaines or quaternary crotonbetaine esters.Preferred Thickening Polymers: These are copolymers of (meth)acrylic acid and ethoxylated fatty alcohol acrylates; crosslinked polyacrylic acid; crosslinked copolymers of (meth)acrylic acid and fatty alcohol acrylates; copolymers of (meth)acrylic acid and ethoxylated fatty alcohol itaconates; copolymers of (meth)acrylic acid and ethoxylated fatty alcohol itaconates and aminoalkyl acrylates; copolymers of (meth)acrylic acid and/or (meth)acrylate esters; copolymers of vinylpyrrolidone and ammoniumacryloyldimethyltaurate; copolymers of ammoniumacryloyldimethyltaurate and ethoxylated fatty alcohol methacrylates; hydroxyethylcellulose; hydroxypropylcellulose; hydroxypropylguar; glyceryl poly(meth)acrylate; olefin-styrene copolymers; polyurethanes; hydroxypropyl starch phosphate; polyacrylamide; decadiene-crosslinked copolymer of maleic anhydride and methylvinylether; locust bean flour; guar gum; xanthan; dehydroxanthan; carrageenan; karaya gum; hydrolyzed corn starch; copolymers of polyethylene oxide, fatty alcohols and methylendiphenyl diisocyanate.Preferred Additives: These are AB block-copolymers of alkyl acrylates and alkyl methacrylates; AB block-copolymers of alkyl methacrylates and acrylonitrile; ABA block copolymers of lactide and ethylene oxide; ABA block copolymers of caprolactone and ethylene oxide; ABC block-copolymers of olefins or dienes, styrene and alkyl methacrylates; ABC block copolymers of acrylic acid, styrene and alkyl methacrylates; star block copolymers; hyperbranched polymers, dendrimers, conductive 3,4-polyethylendioxythiophenes and conductive polyanilines.Preferred Emulsifiers: These include ethoxylated and/or propoxylated fatty alcohols, fatty acids, alkylphenols and fatty acid esters; ethoxylated glycerol; ethoxylated (hydrogenated) castor oil; ethoxylated fatty alkyl phosphates; ethoxylated sorbitan fatty acid esters; polyglycerol fatty acid esters. EXAMPLE - An aerosol can with a Truspray (RTM) spray head was charged with a conditioner (60 wt.%) and pressurized with dimethyl ether (40 wt.%). The conditioner comprised (wt.%): cetyl trimethyl ammonium chloride (1), hydroxyethyl cellulose (0.75), polyquaternium 10 (1.5), citric acid (0.5), perfume (0.2), PEG 40 hydrogenated castor oil (0.3) and water (to 100).