76:
62:
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reported that stress can cause hair to lose its pigment. An overactive immune response can destroy melanocytes and melanocyte stem cells in black-haired rats. When intentionally subjecting them to panic, they bleached their coat. The next time the rats' coat grew, there were no melanocyte stem cells
178:
Changes in hair colour typically occur naturally as people age, eventually turning the hair grey and then white. This normally begins in the early to mid-twenties in men and late twenties in women. More than 60 percent of
Americans have some grey hair by age 40. The age at which greying begins seems
462:
The hair color of buried bodies can change. Hair contains a mixture of black-brown eumelanin and red-yellow pheomelanin. Eumelanin is less chemically stable than pheomelanin and breaks down faster when oxidized. The color of hair changes faster under extreme conditions. It changes more slowly under
367:
Excessive exposure to the sun is the most common cause of structural damage of the hair shaft. Photochemical hair damage encompasses hair protein degradation and loss, as well as hair pigment deterioration
Photobleaching is common among people with European ancestry. Around 72 percent of customers
490:
of imatinib on melanocyte stem cells can be discovered, it is possible that a safer and less expensive substitute drug might someday be developed. It is not yet known whether imatinib has an effect on catalase, or if its reversal of the greying process is due to something else.
445:
There are no special diets, nutritional supplements, vitamins, or proteins that have been proven to slow, stop, or in any way affect the greying process, although many have been marketed over the years. However, French scientists treating
383:
is a genetic abnormality in which little or no pigment is found in human hair, eyes, and skin. The hair is often white or pale blond. However, it can be red, darker blond, light brown, or rarely, even dark brown.
201:
Grey or white hair is not caused by a true grey or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as grey or white because of the way light is reflected from the hairs.
404:
is also known to cause hair to become lighter, thinner, and more brittle. Dark hair may turn reddish or blondish due to the decreased production of melanin. The condition is reversible with proper nutrition.
441:
Grey hair may temporarily darken after inflammatory processes, after electron-beam-induced alopecia, and after some chemotherapy regimens. Much remains to be learned about the physiology of human greying.
695:
Slominski A, Paus R. Melanogenesis is coupled to murine anagen: Toward new concepts for the role of melanocytes and the regulation of melanogenesis in hair growth. J Invest
Dermatol. 1993;101:90S–7S
221:
causes the onset of greying. It remains unclear why the stem cells of one hair follicle may fail to activate well over a decade before those in adjacent follicles less than a millimeter apart.
193:, overall, of those between 45 and 65 years old, 74% had some grey hair, covering an average of 27% of their head, and approximately 1 in 10 people had no grey hairs even after the age of 60.
597:
990:
325:, both chronic and acute, may induce achromotrichia earlier in individuals than it otherwise would have. Proponents point to survivors of disasters, such as
903:
354:
accumulates in human hair over time, but whether this has any effect on hair color has not yet been resolved. A 2020 paper, published in the journal
345:. There is some evidence for chronic stress causing premature achromotrichia, but no definite link has been established. It is known that the stress
1155:
313:. Since vitiligo can cause eyelashes to turn white, the same process is believed to be involved in hair on the head (and elsewhere) due to aging.
282:. At some point in the human life cycle, cells that are located in the base of the hair's follicles slow, and eventually stop producing pigment.
592:
1239:
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A 2005 uncontrolled study demonstrated that people 50–70 years of age with dark eyebrows but grey hair are significantly more likely to have
142:, is the progressive loss of pigmentation in the hair, eventually turning the hair grey or white which typically occurs naturally as people
1399:
1005:
454:, a drug used in treating cancer, noted an unexpected side effect: some of the patients' hair color was restored to their pre-grey color.
778:
372:
research that the sun lightens their hair. The company also have identified 48 genetic markers that may influence hair photobleaching.
398:. This produced significant media coverage that further investigation may someday lead to a general non-dye treatment for grey hair.
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2589:
394:. In a preliminary 2013 study, researchers treated the buildup of hydrogen peroxide which causes this with a light-activated pseudo-
438:
may cause premature greying. Smokers were found to be four times more likely to begin greying prematurely, compared to nonsmokers.
2662:
930:
Sebetić, Klaudija; Sjerobabski Masnec, Ines; Cavka, Vlatka; Biljan, Darko; Krolo, Ivan (October 2008). "UV damage of the hair".
224:
In non-balding individuals, hair may grow faster once it turns grey. Unlike in the skin where pigment production is continuous,
205:
The change in hair colour occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment. The
2584:
1806:
1023:
Department of
Dermatology, Academic Teaching Hospital Dresden-Friedrichstadt (14 December 2005). "Eyebrow color in diabetics".
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has recently been shown to reverse the greying process. However, it is expensive and has potentially severe and deadly
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Greying of hair is the partial or complete process of a hair becoming grey or white. It is also known as
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The order in which greying happens is usually: nose hair, hair on the head, beard, body hair, eyebrows.
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Juangbhanich C; Nitidanhaprabhas P; Sirimachan S; Areekul S; Tanphaichitr VS (June 1991). "Vitamin B
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in sand or in ice) than under wet reducing conditions (such as burials in wood or plaster coffins).
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in the hair is closely associated with stages of the hair cycle. Hair is actively pigmented in the
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1996:
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259:(interferon regulatory factor 4) gene was announced after a study of 6,000 people living in five
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1052:"Premature grey hair and hair loss among smokers: a new opportunity for health education?"
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240:. Thus, a single hair cannot be white on the root side, and colored on the terminal side.
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217:, the cells that produce and store pigment in hair and skin. The death of the melanocyte
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in these damaged follicles, so white hairs sprouted, and the color loss was permanent.
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486:, so it is not practical to use to alter a person's hair color. Nevertheless, if the
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who agreed to be involved in a study and have
European ancestry reported in a recent
309:, which breaks down hydrogen peroxide and relieves oxidative stress in patients with
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Etienne, Gabriel; Cony-Makhoul, Pascale; Mahon, François-Xavier (8 August 2002).
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is a patchy loss of hair and skin color that may occur as the result of an
183:. Sometimes people are born with grey hair because they inherit the trait.
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30:"White hair" redirects here. For the Native American leader, see
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In some cases, grey hair may be caused by thyroid deficiencies,
256:
244:
1381:
1221:
1377:
621:"What Causes Hair To Go White? Let Us Find The Exact Reasons"
904:"Seriously Stressed? Hair Analysis Tells All, Study Finds"
830:"Cure For Gray Hair Is Almost Here, Vitiligo Study Claims"
27:
The natural process of hair turning grey or white with age
531:
Indian
Journal of Dermatology, Venereology and Leprology
301:
Greying of hair may be triggered by the accumulation of
803:
James, William; Berger, Timothy; Elston, Dirk (2005).
189:
Greying is a gradual process; according to a study by
1156:"Interactive Dig Hierakonpolis - Archaeological Hair"
729:"First gray hair gene found, plucked out of research"
247:
appear to be responsible for the process of greying.
593:"Grey hair 'less prevalent than previously thought'"
2577:
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2100:
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117:
109:
97:
87:
51:
46:
591:
255:were the first two discovered, then in 2016, the
1099:Cline DJ (April 1988). "Changes in hair color".
1006:"No evidence of cure to prevent hair going grey"
267:controlled about 70% of cases of hair greying.
706:"Research yields clues to why hair turns gray"
1393:
1233:
1132:
1130:
422:than those with both grey eyebrows and hair.
8:
337:, as well as high-level politicians such as
83:The same man at age 56, with fully grey hair
989:: CS1 maint: numeric names: authors list (
881:"Fact or Fiction?: Stress Causes Grey Hair"
2207:
1419:
1400:
1386:
1378:
1240:
1226:
1218:
162:. The word "canities" is derived from the
74:
69:A 41-year-old man with partially grey hair
60:
55:Greying, graying, canities, achromotrichia
43:
1197:
1075:
750:deficiency: report of a childhood case".
672:
662:
542:
967:"Hair Lightening from the Sun - 23andMe"
305:and abnormally low levels of the enzyme
1025:Acta Dermatovenerol Alp Panonica Adriat
517:
982:
781:. Yahoo! Lifestyle UK. Archived from
590:Copping, Jasper (30 September 2012).
463:dry oxidizing conditions (such as in
232:phase and is "turned off" during the
7:
858:"The Effects of Stress on Your Hair"
647:"Oxidative Stress in Ageing of Hair"
121:Accepting the condition, medications
34:. For the fictional character, see
1822:Ivy League, Harvard, Princeton cut
1138:"Cancer drug restores hair colour"
415:can also cause premature greying.
263:countries. However, it found that
25:
2590:Beard and haircut laws by country
1182:"Imatinib Mesylate and Gray Hair"
1158:. Archaeology.org. Archived from
93:Loss of pigmentation in the hair.
920:Popular Science, January 1, 2020
2585:Andre Walker Hair Typing System
1807:Historical Christian hairstyles
1186:New England Journal of Medicine
727:Storrs, Carina (1 March 2016).
600:from the original on 2022-01-12
294:development, which may cause a
645:Ralph M Trüeb (Jan–Jun 2009).
1:
1113:10.1016/S0733-8635(18)30675-2
902:Robert Preidt (17 Apr 2013).
777:Weir, Sarah B. (2012-10-02).
525:Pandhi, D; Khanna, D (2013).
1050:Mosley JG, Gibbs AC (1996).
1199:10.1056/NEJM200208083470614
828:Nsikan Akpan (3 May 2013).
807:(10th ed.). Saunders.
527:"Premature graying of hair"
2684:
1010:Filey and Hunmanby Mercury
779:"Why does hair turn grey?"
170:for "gray hair, old age".
29:
1068:10.1136/bmj.313.7072.1616
501:Premature greying of hair
236:phase, and absent during
82:
73:
68:
59:
2668:External signs of ageing
1352:Disappearing blonde gene
932:Collegium Antropologicum
567:
544:10.4103/0378-6323.116733
2663:Biological anthropology
1367:Melanocortin 1 receptor
664:10.4103/0974-7753.51923
432:British Medical Journal
179:almost entirely due to
1607:Brush, butch, burr cut
321:Anecdotes report that
104:Psychological distress
1004:Bazian (7 May 2013).
883:. Scientific American
265:environmental factors
2432:Hairstyling products
2007:Short back and sides
1357:Fischer–Saller scale
938:(Suppl 2): 163–165.
333:and prisoner of war
272:Waardenburg syndrome
2610:Eponymous hairstyle
2496:Haircare techniques
2487:Hair texture powder
2345:Frictional alopecia
488:mechanism of action
458:Changes after death
392:auto-immune disease
2547:Health and medical
879:Ballantyne, Coco.
708:. Associated Press
426:Artificial factors
376:Medical conditions
288:autosomal dominant
2645:
2644:
2518:Curly Girl Method
2390:Haircare products
2385:
2384:
2352:Pattern hair loss
1632:Butterfly haircut
1521:
1520:
1375:
1374:
1336:Hydrogen peroxide
814:978-0-7216-2921-6
596:. The Telegraph.
434:study found that
413:pernicious anemia
303:hydrogen peroxide
125:
124:
41:Medical condition
16:(Redirected from
2675:
2658:Human hair color
2372:Trichotillomania
2208:
2204:Hair subtraction
2190:Designer stubble
2032:Standard haircut
1952:Professional cut
1682:Croydon facelift
1602:Broccoli haircut
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1402:
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1388:
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1249:Human hair color
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856:Saling, Joseph.
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752:J Med Assoc Thai
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651:Int J Trichology
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477:anti-cancer drug
420:type II diabetes
298:white forelock.
130:, also known as
78:
64:
44:
21:
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2554:Greying of hair
2542:
2533:Shampoo and set
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2012:Short brush cut
1977:Regular haircut
1627:Businessman cut
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1362:Greying of hair
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971:www.23andme.com
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506:Canities subita
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436:tobacco smoking
428:
409:Werner syndrome
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209:at the base of
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128:Greying of hair
47:Greying of hair
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1827:Japanese women
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1797:High and tight
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1747:Feathered hair
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1692:Curtained hair
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1677:Crochet braids
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1552:Asymmetric cut
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1416:Classification
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1247:
1245:
1244:
1237:
1230:
1222:
1214:
1213:
1172:
1147:
1126:
1107:(2): 295–303.
1091:
1062:(7072): 1616.
1042:
1015:
996:
957:
922:
913:
894:
871:
848:
820:
813:
795:
769:
747:
738:
719:
697:
688:
637:
611:
582:
558:
516:
515:
513:
510:
509:
508:
503:
496:
493:
472:
469:
459:
456:
450:patients with
427:
424:
377:
374:
364:
361:
318:
315:
277:
261:Latin American
211:hair follicles
198:
195:
175:
172:
160:achromotrichia
151:
148:
140:achromotrichia
123:
122:
119:
115:
114:
111:
107:
106:
101:
95:
94:
91:
85:
84:
80:
79:
71:
70:
66:
65:
57:
56:
53:
49:
48:
40:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2680:
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2583:
2582:
2580:
2576:
2570:
2567:
2565:
2562:
2560:
2559:Hair follicle
2557:
2555:
2552:
2551:
2549:
2545:
2539:
2538:Straightening
2536:
2534:
2531:
2529:
2526:
2524:
2521:
2519:
2516:
2514:
2511:
2509:
2508:Hair coloring
2506:
2504:
2501:
2500:
2498:
2494:
2488:
2485:
2483:
2480:
2478:
2475:
2473:
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2468:
2465:
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2209:
2206:
2202:
2196:
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2179:
2176:
2174:
2171:
2169:
2166:
2164:
2161:
2159:
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2154:
2151:
2147:
2144:
2142:
2139:
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2134:
2132:
2129:
2127:
2124:
2122:
2119:
2118:
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2111:
2108:
2103:
2099:
2093:
2090:
2088:
2085:
2083:
2080:
2078:
2077:Victory rolls
2075:
2073:
2070:
2068:
2065:
2063:
2060:
2058:
2055:
2053:
2050:
2048:
2045:
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2040:
2038:
2035:
2033:
2030:
2028:
2027:Straight hair
2025:
2023:
2020:
2018:
2015:
2013:
2010:
2008:
2005:
2003:
2000:
1998:
1995:
1993:
1990:
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1843:
1840:
1838:
1835:
1833:
1830:
1828:
1825:
1823:
1820:
1818:
1817:Induction cut
1815:
1813:
1810:
1808:
1805:
1803:
1800:
1798:
1795:
1793:
1790:
1788:
1787:Hair crimping
1785:
1783:
1780:
1778:
1775:
1773:
1770:
1768:
1765:
1763:
1760:
1758:
1755:
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1504:
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1355:
1353:
1350:
1349:
1347:
1343:
1337:
1334:
1332:
1329:
1327:
1326:Dye stripping
1324:
1322:
1319:
1317:
1314:
1313:
1311:
1309:
1308:Hair coloring
1305:
1299:
1296:
1294:
1291:
1289:
1286:
1284:
1281:
1279:
1276:
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1224:
1223:
1220:
1209:
1205:
1200:
1195:
1191:
1187:
1183:
1176:
1173:
1162:on 2011-12-10
1161:
1157:
1151:
1148:
1144:. 2002-08-08.
1143:
1139:
1133:
1131:
1127:
1122:
1118:
1114:
1110:
1106:
1102:
1101:Dermatol Clin
1095:
1092:
1087:
1083:
1078:
1073:
1069:
1065:
1061:
1057:
1053:
1046:
1043:
1038:
1034:
1031:(4): 157–60.
1030:
1026:
1019:
1016:
1011:
1007:
1000:
997:
992:
986:
972:
968:
961:
958:
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895:
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875:
872:
859:
852:
849:
837:
836:
835:Medical Daily
831:
824:
821:
816:
810:
806:
799:
796:
785:on 2012-10-07
784:
780:
773:
770:
765:
761:
758:(6): 348–54.
757:
753:
742:
739:
734:
730:
723:
720:
707:
701:
698:
692:
689:
684:
680:
675:
670:
665:
660:
656:
652:
648:
641:
638:
626:
625:gaizupath.com
622:
619:Giana, Bosa.
615:
612:
599:
594:
586:
583:
571:(in Japanese)
570:
562:
559:
554:
550:
545:
540:
537:(5): 641–53.
536:
532:
528:
521:
518:
511:
507:
504:
502:
499:
498:
494:
492:
489:
485:
481:
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328:
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308:
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285:
281:
273:
268:
266:
262:
258:
254:
250:
246:
241:
239:
235:
231:
227:
226:melanogenesis
222:
220:
216:
212:
208:
203:
196:
194:
192:
187:
184:
182:
173:
171:
169:
165:
161:
157:
149:
147:
145:
141:
137:
133:
129:
120:
116:
112:
108:
105:
102:
100:
99:Complications
96:
92:
90:
86:
81:
77:
72:
67:
63:
58:
54:
50:
45:
37:
33:
19:
2595:Bearded lady
2553:
2523:Hair cutting
2377:Pogonophobia
2367:Trichophilia
2087:Widow's peak
1857:Layered hair
1782:Frosted tips
1772:French twist
1767:French braid
1712:Digital perm
1361:
1331:Highlighting
1189:
1185:
1175:
1164:. Retrieved
1160:the original
1150:
1141:
1104:
1100:
1094:
1059:
1055:
1045:
1028:
1024:
1018:
1009:
999:
974:. Retrieved
970:
960:
935:
931:
925:
916:
907:
897:
885:. Retrieved
874:
862:. Retrieved
851:
839:. Retrieved
833:
823:
804:
798:
787:. Retrieved
783:the original
772:
755:
751:
741:
732:
722:
710:. Retrieved
700:
691:
654:
650:
640:
628:. Retrieved
624:
614:
602:. Retrieved
585:
573:. Retrieved
568:鼻毛にも白髪は生えるの？
561:
534:
530:
520:
484:side effects
474:
461:
444:
440:
429:
417:
407:
402:Malnutrition
400:
386:
379:
366:
355:
349:
343:Barack Obama
339:Bill Clinton
331:Harold Bride
326:
320:
300:
290:disorder of
269:
252:
248:
242:
223:
204:
200:
188:
185:
177:
167:
159:
155:
153:
139:
135:
131:
127:
126:
2625:Hairdresser
2564:Hair growth
2503:Backcombing
2417:Conditioner
2340:universalis
2102:Facial hair
2052:Temple fade
2042:Surfer hair
1812:Hi-top fade
1792:Hair twists
1752:Finger wave
1454:by location
657:(1): 6–14.
630:16 February
335:John McCain
215:melanocytes
150:Terminology
52:Other names
2652:Categories
2569:Trichology
2362:Management
2178:toothbrush
2141:Soul patch
2136:Shenandoah
2022:Spiky hair
2017:Short hair
1947:Punch perm
1882:Marcelling
1852:Laid edges
1842:Kinky hair
1837:Jheri curl
1737:Extensions
1717:Dreadlocks
1687:Curly hair
1642:Caesar cut
1547:Afro puffs
1528:hairstyles
1409:Human hair
1321:Blue rinse
1256:Hair color
1192:(6): 446.
1166:2012-04-03
976:2020-01-08
841:17 January
789:2012-11-10
604:22 January
512:References
471:Management
296:congenital
292:melanocyte
286:is a rare
284:Piebaldism
280:deficiency
219:stem cells
207:stem cells
32:White Hair
18:White hair
2620:Good hair
2477:Volumizer
2318:disorders
2228:threading
2195:Sideburns
2168:horseshoe
2163:handlebar
2158:Fu Manchu
2153:Moustache
2131:Ned Kelly
2121:Chinstrap
2057:Titus cut
2047:Taper cut
1972:Razor cut
1937:Pompadour
1932:Pixie cut
1867:Long hair
1847:Kiss curl
1732:Eton crop
1727:Edgar cut
1707:Dido flip
1657:Comb over
1503:Abdominal
965:23andMe.
944:0350-6134
887:14 August
864:14 August
363:UV damage
329:survivor
276:vitamin B
118:Treatment
36:Whitehair
2513:Crimping
2437:Hot comb
2325:Alopecia
2307:straight
2297:electric
2243:electric
2238:chemical
2233:plucking
2211:cosmetic
2146:Van Dyke
2072:Undercut
2037:Step cut
1992:Shape-up
1982:Ringlets
1942:Ponytail
1877:Lovelock
1802:Hime cut
1762:Fontange
1742:Fauxhawk
1722:Ducktail
1702:Devilock
1697:Czupryna
1672:Crew cut
1667:Cornrows
1652:Chonmage
1637:Buzz cut
1592:Bowl cut
1587:Bouffant
1572:Big hair
1493:Underarm
1440:Terminal
1208:12167692
1142:BBC News
1037:16435045
985:cite web
952:19138021
860:. Web MD
712:5 August
683:20805969
598:Archived
553:23974581
495:See also
480:imatinib
452:imatinib
448:leukemia
396:catalase
388:Vitiligo
381:Albinism
351:cortisol
311:vitiligo
307:catalase
243:Several
213:produce
181:genetics
174:Overview
168:cānitiēs
156:canities
136:canities
89:Symptoms
2602: (
2578:Related
2467:Shampoo
2462:Rollers
2457:Relaxer
2407:Clipper
2335:totalis
2260:Shaving
2218:Removal
2062:Tonsure
2002:Shimada
1967:Rattail
1927:Pigtail
1912:Pageboy
1887:Mod cut
1872:Lob cut
1757:Flattop
1647:Chignon
1622:Bunches
1614: (
1582:Bob cut
1577:Blowout
1567:Beehive
1488:Eyelash
1481:unibrow
1476:Eyebrow
1423:by type
1121:3288386
1086:8991008
1077:2359122
764:1744541
674:2929555
465:burials
430:A 1996
370:23andMe
347:hormone
327:Titanic
238:telogen
234:catagen
191:L'Oreal
132:greying
2600:Barber
2452:Pomade
2447:Mousse
2330:areata
2302:safety
2223:waxing
2183:walrus
2173:pencil
2126:Goatee
1997:Shikha
1897:Mullet
1892:Mohawk
1832:Jewfro
1777:Fringe
1616:odango
1445:Vellus
1430:Lanugo
1293:Titian
1263:Auburn
1206:
1119:
1084:
1074:
1035:
950:
942:
811:
762:
681:
671:
575:3 July
551:
356:Nature
323:stress
317:Stress
230:anagen
197:Causes
110:Causes
2615:Frizz
2472:Spray
2422:Dryer
2397:Brush
2292:Razor
2280:brush
2275:cream
2248:laser
2116:Beard
2092:Wings
2082:Waves
1962:Quiff
1957:Queue
1922:Payot
1907:1980s
1902:1950s
1597:Braid
1562:Bangs
1526:Head
1508:Pubic
1498:Chest
1345:Other
1298:White
1278:Brown
1273:Blond
1268:Black
908:WebMD
274:or a
253:Bcl-w
245:genes
166:word
164:Latin
138:, or
113:Aging
2630:list
2604:pole
2528:Perm
2442:Iron
2412:Comb
2402:Clay
2285:soap
2265:head
2107:list
2067:Updo
1987:Shag
1917:Part
1662:Conk
1557:Bald
1542:Afro
1533:list
1471:Nose
1461:Body
1435:Body
1316:Blue
1283:Gray
1204:PMID
1117:PMID
1082:PMID
1033:PMID
991:link
948:PMID
940:ISSN
889:2013
866:2013
843:2016
809:ISBN
760:PMID
714:2011
679:PMID
632:2017
606:2017
577:2012
549:PMID
475:The
411:and
341:and
257:IRF4
251:and
249:Bcl2
2482:Wax
2427:Gel
2270:leg
2253:IPL
1612:Bun
1513:Leg
1466:Ear
1288:Red
1194:doi
1190:347
1109:doi
1072:PMC
1064:doi
1060:313
1056:BMJ
733:CNN
669:PMC
659:doi
539:doi
158:or
144:age
2654::
1202:.
1188:.
1184:.
1140:.
1129:^
1115:.
1103:.
1080:.
1070:.
1058:.
1054:.
1029:14
1027:.
1008:.
987:}}
983:{{
969:.
946:.
936:32
934:.
906:.
832:.
756:74
754:.
748:12
731:.
677:.
667:.
653:.
649:.
623:.
547:.
535:79
533:.
529:.
278:12
146:.
134:,
2606:)
2109:)
2105:(
1618:)
1535:)
1531:(
1401:e
1394:t
1387:v
1241:e
1234:t
1227:v
1210:.
1196::
1169:.
1123:.
1111::
1105:6
1088:.
1066::
1039:.
1012:.
993:)
979:.
954:.
910:.
891:.
868:.
845:.
817:.
792:.
766:.
735:.
716:.
685:.
661::
655:1
634:.
608:.
579:.
555:.
541::
38:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
