480 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Laureth 23 surface active agents hydrocortisone stability, 335 Lipids emulsions water-in-oil, comparison, o/w, emollient effects, human skin, 263 skin dry, pigs, 317 Lotions emollients skin, evaluations, 241 moisturizers effects, skin capacitance, 383 Mechanism of action pyrithione zinc and derivatives, antidandruff effects, in vitro, l Membranes polypropylene benzocaine absorption, methodology, 327 Metabolism polyoxyethylene lauryl ethers mice, 263 Metals salts antiperspirants, 255 Metanil yellow absorption percutaneous, Tesafilm stripping method, humans, 47 Metho. dology absorption benzocaine, mouse skin, 327 percutaneous, cosmetic dyes, Tesafilm stripping method, humans, 47 antiperspirants, 255 deodorants topical preparations, evaluations, 351 hair reduction kinetics, 301 skin analysis, 429 dry, animal models, 317 friction, 463 irritation, effects, electric potential, evaluations, guinea pigs, 159 moisture, impedance, 419, oiliness, evaluations, 241 topography, aging, analysis, negative reliefs, humans, 177 toothbrushes evaluations, cleaning performance, 151 toxicity cosmetics, comedogenicity, rabbits, 215 Methyl stearate emulsions micro-, stability, effects, structure and stabilizers, 73 Microscopy hair racial differences, 361 reduction kinetics, 301 skin surface. 407 Mineral oil lotions skin, moisture, 383 Models kinetics hair reduction, 301 skin dry, pigs, 317 Moisture skin capacitance, electrometry, 383 evaluation, methodology, 419 facial, 241 impedance, analysis, 419 loss, pigs, 317 loss, transepidermal, diffusivity, equations, 191 loss, transepidermal, effects, w/o and o/w emulsions, humans, 263 Moisturizers skin effects, capacitance, 383 evaluation, methodology, 419 impedance, analysis, 419 Morphology hair racial differences, 361 Mositure hair setting, relaxation, equations, 205 Negroes hair analysis, 361 combing effects, comparison, Caucasian, 213 Nitrites cosmetics analysis, 41 Nitrosamines cosmetics denitrosation, chemiluminescence, analysis, 41 N-Nitrosodiethanolamine analysis denitrosation, chemiluminescence, cosmetics, 41 Octyl aidehyde emulsions micro-, comparison, esters, stability effects, 73 Octylamine adsorption kerntin fibers, 285 Odors perception perfumes, complexity, psychophysical evaluations, humans, 83 Oils skin evaluation, methodology, 407 vegetable comedogenicity, rabbits, 215 Oils, essential odors perception, complexity, psychophysical evaluations, humans, 83 Omadine disulfide, see Dipyrithione Oxygen effects collagen tissues, aging, 439 Penetration benzocaine mouse skin, 327 Pentanol, see 1-Pentanol n-Pentanol, see Alcohols, pentyl 1-Pentanol stabilizers microemulsions, esters, effects, stability, structure, 73 Perfumes odors perception, complexity, psychophysical evaluations, humans, 83 Permeability skin benzocaine, mice, 327 regional, male and female rats, in vitro, 127 Petrolatum effects skin capacitance, 383 skin, pigs, 317 vehicles benzoic acid, regional absorption, rat skin, in vitro, 127 pH, see Hydrogen ion concentration l-Phenylazo-2-naphthol, see Sudan ! Photography skin analysis, 407 Polyethylene glycol 400 effects benzocaine absorption, mouse skin, 327 toxicity skin, irritation, effects, electric potential, guinea pigs, 159 Polyoxyethylene lauryl ethers absorption percutaneous, mice, 263 Preservatives benzoic acid resistance, P. cepacia, cosmetic formulations, 197 formaldehyde resistance, P. cepacia, cosmetic formulations, 197 Propylene glycol combination, glyceryl oleate hydrocortisone stability, 335 effects benzocaine absorption, mouse skin, 327 Pseudomonas cepacia resistance preservatives, pH, cosmetic formulations, 197 Purification red lake C amine, 273 Pyrithione sodium effects skin, cellular metabolism, antidandruff mechanism, in vitro, 1 Pyrithione zinc effects skin, cellular metabolism, antidandruff mechanism, in vitro, 1 Race Caucasians hair, combing effects, comparison, Negroes, 213 hair analysis, 361 Negroes hair, combing effects, comparison, Caucasians, 213

SUBJECT INDEX 481 Raw materials cosmetics comedogenicity, rabbits, 215 Red lake C amine contamination D&C Red No. 9, 273 Reducing agents dithiothreitol hair, kinetics, 301 sodium dihydrolipoate hair, kinetics, 301 sodium thioglycolate hair, kinetics, 301 Reduction hair kinetics, 301 Relative humidity skin stratum comeurn, transepidermal loss, diffusivity, 191 Resins hair sprays concentration, effects, set relaxation, equations, 205 Resistance preservatives P. cepacia, cosmetic formulations, 197 Retin A, see Tretinoin Retinoic acid, see Tretinoin Rheology microemulsions hydrocortisone, 335 Sex effects perception, odors, perfumes, men and women, 83 rats effects, skin permeability, regional, in vitro, 127 Shape toothbrushes effects, cleaning performance evaluations, 151 Side effects, see Toxicity Skin absorption benzocaine, mice, 327 polyoxyethylene lauryl ethers, mice, 263 aging rat and human, 451 analysis physical properties, 429 topography, 407 cosmetics comedogenicity, rabbits, 215 dry animal models, pigs, 317 emollients emulsions, w/o, comparison, o/w, effects, humans, 263 facial oiliness, 241 friction evaluation, methodology, 463 hydration stratum corneum, swelling, comparison, hair, wool, in vitro, 21 moisture impedance, analysis, 419 stratum corneum absorption, cosmetic dyes, Tesafilm stripping method, humans, 47 electric potential, effects, irritation, evaluation, guinea pigs, 159 moisture, capacitance, 383 permeability, regional, male and fe'male rats, in vitro, 127 water, diffusivity, transepidermal loss, equations, 191 tests patch, Hill Top Chamber, occlusivity, humans, 13 topography aging, analysis, negative reliefs, humans, 177 Soaps effects skin, evaluations, 241 triclocarban effects, methodology, 335 Sodium chloride vehicles hydrocortisone stability, 335 Sodium dihydrolipoate effects hair reduction kinetics, 301 Sodium dodecyl sulfate, see Sodium lauryl sulfate Sodium lauryl sulfate stabilizers microemulsions, esters, effects, stability, structure, 73 Sodium myristate surface active agents hydrocortisone stability, 335 Sodium stearate surface active agents hydrocortisone stability, 335 Sodium thioglycolate effects hair reduction kinetics, 301 Solubility benzocaine absorption, mouse skin, 327 hair beard and scalp, 361 Solubilization hydrocortisone microemulsions, 335 Solutions benzocaine absorption, mouse skin, 327 perfumes odors, complexity and psychophysical perception, humans, 83 Solvent blue 35 absorption percutaneous, Tesafilm stripping method, humans, 47 Solvents formic acid effects, epidermis, swelling, comparison, hair, wool, in vitro, 21 polyethylene glycol 400 benzocaine absorption, mouse skin, 327 propylene glycol benzocaine absorption, mouse skin, 327 thioglycolic acid effects, epidermis, swelling, comparison, hair, wool, in vitro, 21 water effects, epidermis, swelling, comparison, hair, wool, in vitro, 21 Sorption alkylamines keratin fibers, 285 Spectrometry skin surface, 407 Stability collagen tissues, aging, animals, 439 emulsions micro-, esters, effects, structure, stabilizerq. 73 microemulsions hydrocortisone, 335 Stabilizers sodium lauryl sulfate microemulsions, esters, stability effects, 73 1-pentanol microemulsions, esters, stability effects, 73 Steroids, cortico- cortisone absorption, regional, male and female rat skin, in vitro, 127 hydrocortisone microemulsions, stability, 335 Stimulants central nervous system, see Central nervous system stimulants Structure alcohols hydrocortisone microemulsions, 335 alkanediols lanolin hydrogenated, allergens, patients and animals, 99 alkylamines adsorption, keratin fibers, 285 esters microemulsions, stability effects, 73 polyoxyethylene lauryl ethers excretion, mice, 263 skin analysis, 429 Sudan I contamination D&C Red No. 9, 273 Surface skin friction, methodology, 463 Surt•ce active agents anionic effects, epidermis, swelling, comparison, hair, wool, in vitro, 21 microemulsions hydrocortisone, 335 polyethylene glycol 400 irritation, skin, effects, electric potential, guinea pigs, 159