SUBJECT INDEX 451 Methyl alcohol solubility parameter, 319 Methylcellulose thickening agent cosmetics, 393 Methylene chloride solubility parameter, 319 solvent polarity NDELA, 223 Methyl isobutyl ketone solubility parameter, 319 Methyl lactate solubility parameter, 319 Methylmercaptan oral malodor, 297 Methyl oleate solubility parameter, 319 Methyl paraben cosmetics resistance, 413 in cream, 143 solubility parameter, 319 Methyl salicylate solubility parameter, 319 Microfibrils keratin swelling, 17 Microrelief skin geometric characteristics, 143 Microscopy hair, 75 Moisturizers stratum corneum• 177 Mono-dinitrophenyl-cystine hair cystinc interchange, 363 Monoethanolamine matrix NDELA determination, 223 Monoethanolamine thioglycolate humectant hair treatment, 39 Monothiol acid disulfide bond reduction, 75 Morpholine matrices NDELA determination, 223 Mouse in vitro assay phototoxicity, 425 Muscone solubility parameter, 319 Myristic acid solubility parameter, 319 Myristyl alcohol solubility parameter NaCI oxidative dyeing keratin, 31 Na2HPO4 buffer solution aqueous dyeing, 1 Nail amino acid analysis, 17 Naphthalenesulfonic acid hair torsional behavior, 87 1-naphthol dye uptake, 31 N-ButyI-N'Nitrosoguanidine chromatographic characteristics HPLC-TEA analysis, 213 NDELA quantitative analysis, 213 cosmetic ingredients, 223 Neomycin sulfate allergen delayed contact hypersensitivity testing, 159 Negroid hair fracture behavior, 39 Neopentane solubility parameter, 319 N-ethyl-n'nitro-n-nitrosoguanidine chromatographic characteristics HPLC-TEA analysis, 213 N-(2-hydroxyethyl)-2-nitro.p-phenyl- enediamine HC Red 3 dye diffusion, 1 Nitrocellulose solubility parameter, 319 Nitrogen assay imidazolidinyl urea, 313 skin lipid removal, surface composition, 287 N-methyl-n-nitrosourea chemical characteristics HPLC-TEA analysis, 213 N'N-bis-(2-hydroxyethyl)-p-phenylene- diamine dye uptake, 31 N-nitrosamines, 213, 223 N-nitrosodibutylaminc chromatographic characteristics HPLC-TEA analysis, 213 N-nitrosodiethanolamine, see NDELA N-nitrosodiisopropanolamine chromatographic characteristics HPLC-TEA analysis, 213 N-nitrosodiisopropylamine chromatographic characteristics HPLC-TEA analysis, 213 N-nitroso-3-hydroxypiperidine chromatographic characteristics HPLC-TEA analysis, 213 N-nitrosoproline chromatographic characteristics HPLC-TEA analysis, 213 N-nitrosopyrrolidine chromatographic characteristics HPLC-TEA analysis, 213 N-nitrosopyrrolidone chromatographic characteristics HPLC-TEA analysis, 213 Nonoxynol dye deposition, 31 solubility parameter, 319 Nonylphenol solubility parameter, 319 Nutrient agar skin antibacterial activity, 231 Occlusivity emulsions, 255 Octadecanol triboelectric charging, 189 Octadecyl sulfonates surfactant, 189 Octadecyl trimethyl ammonium surfactant, 189 Octane solubility parameter, 319 Octyl dimethyl sunscreen substantivity, 355 Octyl dimethyl PABA: solubility parameter, 319 Octyl dodecanol solubility parameter, 319 Octyl palmitate solubility parameter, 319 Odor isocamphane, 381 Oil emulsions occlusivity, 255 in cream olive, 143 in vitro assay phototoxicity, 425 seburn composition olive, coconut, 271 skin fluorescence intensity, 125 Oleic acid shampoo detergency, 271 solubility parameter, 319 Oleth solubility parameter, 319 Oleyl alcohol solubility parameter, 319 Olive oil solubility parameter, 319 Osmium tetroxide hair kinetic reduction, 75 OSO4 hair preparation for scanning transmission, 53 Oxidation dyeing keratin fibers, 31 hair damage, 61 polyethylene solubility parameter, 319 ring structure dithiane, diothiolane, 75

452 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS skin, surface composition, 287 triboelectric charging surface modification, 189 Ozonolysis triboelectric charging, surface modification, 189 PABA solubility parameter, 319 Palmitic acid shampoo detergency, 271 solubility parameter, 319 P-aminobenzoate sunscreen substantivity, 355 P-amino benzoic acid substantivity in vivo, in vitro, 355 Panthenol in cream, 143 solubility parameter, 319 PEG solubility parameter, 319 Pentaerythritol rosinate solubility parameter, 319 Pentane solubility parameter, 319 Perhydrosqualene emulsions occlusivity, 255 Permeability epidermis barrier property, 287 steroids epidermal surface, 303 Petrolatum allergen testing, 159 emulsions, 255 solubility parameter, 319 pH dyes, diffusion, 1 uptake, 31 Phenacetin neutralizer, 61 surface tension values, 393 Phenethyl alcohol solubility parameter, 319 Phenoxyethanol solubility parameter, 319 2-phenylbenzimidazolsulfonic acid in sunscreens, 125 Phosphorus skin composition surface, 287 Phototoxicity in vitro assay oil materials, 425 Plastic flow sedimentation suspension, 393 Plasticity stratum corneum, 177 Plasticizers solubility parameter, 319 Pliability stratum corneum, 177 P-methoxycinnamic acid esters in sunscreens, 125 Polarity solubility parameter cosmetic formulations, 319 suspensions stability, 393 Polyacrylic acid humectant sorption, 39 Poly(arylomethylstyrenes) triboelectric charging Hammet correlation, 189 Polycarbonate bisphenol-A triboelectric charging film preparation, 189 Polyethylene solubility parameter, 319 triboelectric charging Hammet correlation, 189 Polymers work function triboelectric charging, 189 Poly(methacrylamidopropyltrimethyl ammonium chloride) triboelectric charging, 189 Poly(methylmethacrylate) triboelectric charging film preparation, 189 Polyols sedimentation density, 393 Polysorbate in solution effect on steroids, 303 Polystyrenes triboelectric charging Hammet correlation, film preparation, 189 Potassium dichromate allergen delayed contact hypersensitivity testing, 159 Powders contact angles, suspensions, 393 PPG methyl ether solubility parameter, 319 P-phenylenediamine allergen delayed contact hypersensitivity testing, 159 dye uptake, 31 Pristane solubility parameter, 319 Profilimetry skin geometric characteristics, 143 Propane solubility parameter, 319 2-propanol sunscreen substantivity, 335 Propellant solubility parameter, 319 Propyl acetate solubility parameter, 319 Propyl alcohol solubility parameter, 319 Propylene carbonate solubility parameter, 319 Propylene glycol effects on steroids absorption, vasoconstruction, 303 solubility parameter, 319 suspensions flocculation, 393 Propylparaben in cream, 143 Protein keratin analysis, 17 Pseudomonas aeruginosa resistance imidozolidinyl urea, 413 Pseudomonas cepacia resistance imidozolidinyl urea, 413 Pseudomonas putida resistance imidozolidinyl urea, 413 Pseudoplasticity sedimentation viscosity, 393 P-tolvenesulfonylmethylnitrosamide chromatographic characteristics HPLC-TEA analysis, 213 Pyridine solubility parameter, 319 Pyrithion salts assay methods, 373 Quaternium matrices NDELA determination, 223 resistance cosmetics, 413 Quenching phototoxicity, 425 Race Negroid hair, fracture behavior, 39 Caucasian comparison of Negroid hair fracture behavior, 39 skin topography, 143 cystine content in hydrolysates, 363