healthy hair, Pantene, Head & Shoulders, Procter & Gamble, P&G, Beauty Science, hair health The World of Hair

 an on-line reference by Dr. John Gray,
provided by the P&G Hair Care Research Center.
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Hair Care and Hair Products Research Procter and Gamble Hair Care Research Hair Products  
Index
 
 
acids 83   'hot oils' 80

  

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 








 

 

 

 

 

 

 

 


 

 

 

 

 

 

 

 

 








 

 

 

 

 

 

 

 

 


 

 

 

 








 

 





 

 

 

 

 

 

 


 


 

 

 

 

 

 

 








 

 

 

 

 

 







 

 

 
    see also amino acids hydration see moisture content of hair
adolescence 8 hydrogen bonds 18, 79, 80
albinism 62 hydrogen peroxide
alkalis 83     use in bleaching 101
allergies 95     use in perming 83
alopecia 103
    androgenetic 103 impetigo 115
    traction 110 indicator papers 83
alopecia areata 61, 62, 108-9, 110  
alopecia totalis 110

keratin 13, 14, 18, 47
amino acids 14, 18     natural color 59, 93
ammonium thioglycollate (in perming lotion) 83 knotted hair 70
anagen 21-3
anagen hair 30 lanugo hair 7
androgens 14, 24, 103 length of hair 22-3
anorexia nervosa 24 lightening hair see bleaching
apes loose anagen syndrome 111

    baldness in 106

loose hairs 30
    hair from 11 lowlighting 102
atopic eczema 115 Ludwig pattern baldness 105
Australian Aborigine 36
male pattern baldness 103, 104
babies' hair 7, 76 matrix of hair 14
backcombing and backbrushing 72-3, 76, 101 matted hair 71, 100
balding see hair loss medulla of hair 14
beards 24, 25 melanin (hair pigment) 12, 14, 22, 59-61, 96
bird's nest hair 100     distribution in hair 16, 59, 60
bleaching 93-96     effect of bleaches 93, 96
     damage due to 71, 72, 75, 94-5     in red hair 61, 87
blow drying 71, 80, 126-7 melanocytes 12, 13
body hair 8, 10, 24 microscopes 30, 32
bubble hair 73,98-9 Minoxadil 106
catagen 21, 22 moisture content of hair 34, 69
Caucasoid hair 36, 37, 39, 41, 42, 43, 45, 50, 52
 Asian hair 36, 37, 38
    perming 93     structure 47
    structure 47 mosaic patterns 7, 8
    variability 48 mousses 80, 122
chemotherapy 27
cheveux incoiffables 112, 113 natural hair colorings 92
children's hair 8     see also henna
    congenital abnormalities 112, 113 African hair 36, 37, 40, 43, 78
    loss 111     structure 47, 48
color agents 91-2     vulnerable to damage 37, 43
    see also henna nits 101
color circle 91 normal hair 123
color of hair 58-63
coloring hair 88-95 oestrogens 24
    damage due to 71-2, 75 oiled hair 43, 57
    step-by-step procedure 91-5 older people 10, 58, 91
combination colors 91     hair cycle in 22
complementary colors 91     hair loss in 105
condition of hair 65-7
conditioners 66, 73-4, 120 panthenol 55, 119
    applying 125 permanent hair colors 95
    choosing 123-4 perming hair 80-86
    and hair texture 35     aftercare 86
    needed on dry hair 55     damage due to 35, 71-2, 75, 76, 82, 87, 88, 100
    needed on weathered hair 69

    and hair type 87
    in shampoos 119, 120-1     history 80, 82
cortex of hair 14     neutralization 72, 83
'cowlick' hair 27     perm shock 86
cradle cap 115     problems in 88
cuticle of hair 14,16     step-by-step procedure 84-85
pH
damage to hair 67-73, 74-7     and hair 83
    from bleaching 71, 72, 75, 94-5     of shampoos 107
    from cutting and styling 69, 70, 71     of skin 86
    from dyeing 71-2, 75 phaeomelanin 16, 59, 60, 90, 93
    from heat 73, 74-5, 98-99
 physical properties of hair 32-5
    from incorrect shampooing 71 pigment of hair 22, 59-61
    from perming 35, 71-2, 75, 76, 82, 87, 88, 100     see also melanin
    from relaxing 77, 88 pityriasis capitis 114
    from sunlight 72 porosity of hair 34
    from weathering 16, 60, 67-9, 77 pregnancy 24
    mechanical 72-3, 76 primary colors 91
    minimizing and preventing 73-4, 135 proteins 18
dandruff 114     of hair see keratin
dermatitis of scalp 115 psoriasis 115
dimethicone conditioners 73-4 puberty 8, 24
distribution of hair 5
disulphide linkages (bonds) 18, 80, 85 razor cutting 69, 70
drugs, effect on hair growth 9, 27 'record of the hair' 70, 97
dry hair 54, 55, 124 red hair 5, 60-1
drying hair 71, 80, 125-7     difficult to bleach 93
dyeing hair see coloring hair     difficult to perm 86
relaxing hair 47, 77, 86-7
eczema 114-5 ringworm 115
elasticity of hair 32, 34
electron microscope 32 scalp disorders 114-5
eumelanin 16, 59, 63, 90, 93 scissors 69
examining hair 28-32 sebaceous glands 12, 13
seborrhoeic eczema 114
facial hair 10, 24, 25 sebum 13, 55, 123
female pattern baldness 103,105 secondary colors 91
fine hair 123 semi-permanent hair dyes 92-3
'fly away' hair 34 setting 18, 79-80
setting lotions 122
gels (styling) 122 shades of color 91

glossy hair 16

 shampooing 116, 124-5
greasy hair 14, 54, 55, 56, 123     after bleaching 95
green hair 98     avoid after perming 92
gray hair     frequent 124
    in older people 10, 58, 61     and hair loss 30, 113
    premature 62     how not to do it 71, 124
    sudden appearance 61-2 shampoos 117-20, 122
      '2-in-l' 120-1
hair     choosing 112-3
    control of growth 23-4     composition 118-2
    how much we have 5     mildness 120
    personality expression through 5-6 shape of hairs 18
    straight or curly 47-8 silicone conditioners 73-4, 120
    variations in 7-10 skin, acid and alkaline 86
    what it does 4-5 soaps 118
hair bulb 12-13 spectrum 91
hair dimensions 18 split ends 69, 74
hair disorders 101-13 static electricity 32, 34
hair follicles 5, 22, 23 strength of hair 18
    effect of damage 27 structure of hair 11-19
    structure 12-13     variations in 47-8
hair growth cycle 20-25 styling hair 79-80
hair loss 61, 102-13 styling products 110-1
    in children 111 surfactants 118, 119, 120
    diffuse 106-07
    due to hair pulling 110 telogen 21, 22
    due to hair shaft abnormalities 123 telogen effluvium 107
    due to traction and trauma 110 telogen hairs 30
    natural 21, 22, 30, 103, 107-08 temporary hair color 91-2
    patchy 108-9 terminal hairs 7, 9
    in psoriasis 115 texture of hair 35
    shampooing and 30, 113 tints see color agents
hair patterns 26-8 traction alopecia 110
hair pulling 110 trichorrhexis invaginata 111
hair shaft 13-14, 15 trichorrhexis nodosa 74
    abnormalities 111-3 trichothiodystrophy 111

    diameter 18, 34, 35

 trichotillomania 110
hair sprays 122-3 two-step coloring process 95-101
    accumulation 99  
hair streams 8, 26, 27 unruly hair (children) 8, 27, 102-3
hair types 36-53
    mixed 43, 44, 48, 51, 53 vellus hairs 7, 9
    see also Caucasoid hair; Asian hair; African hair vitamin B, and hair growth 24
hairlines 28
Hamilton pattern baldness 103, 104 weathering 16, 60, 67-9, 77
head lice 101 wet hair 34
henna 88, 90, 92 woolly naevus 113
highlighting 94
hormones 14, 24 zinc, and hair growth 24
Hair Care and Hair Products Research Procter and Gamble Hair Care Research Hair Products