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Stem cell-derived conditioned medium for alopecia: A systematic review and meta-analysis

Chien WY, Huang HM, Kang YN, Chen KH, Chen C

J Plast Reconstr Aesthet Surg, 2024 Jan;88:182-192.
PMID: 37983981 DOI: 10.1016/j.bjps.2023.10.060

BACKGROUND: Alopecia is a common and distressing medical condition that has been related to psychiatric disorders. Stem cell-derived conditioned medium (CM), a novel therapy for hair regeneration, has shown effectiveness in several trials.
METHODS: This meta-analysis aims to explore the effectiveness of stem cell-derived CM in improving hair growth for patients of alopecia. We prospectively registered this systematic review and meta-analysis in PROSPERO (CRD42023410249). Clinical trials that the enrolled participants suffering from alopecia applied stem cell-derived CM were included. We calculated the mean and standard deviation for the hair density and thickness.
RESULTS: Ten clinical trials were included in our analysis. On the basis of eight clinical trials (n = 221), our pooled results indicate that stem cell-derived CM is effective in increasing hair density (mean difference [MD]: 14.93, confidence interval [95% CI]: 10.20-19.67, p hair density (MD: 9.23, 95% CI: 1.79-16.68, p hair density and thickness for alopecia, and there is no difference between each method (topical application, microneedling, or injection).

Matched MeSH terms: Hair*
Area of hock hair loss in dairy cows: risk factors and correlation with a categorical scale

Lim PY, Huxley JN, Green MJ, Othman AR, Potterton SL, Brignell CJ, et al.

Vet J, 2015 Feb;203(2):205-10.
PMID: 25577022 DOI: 10.1016/j.tvjl.2014.11.005

Data from 3691 dairy cows from 76 farms were used to investigate the risk factors associated with the area of hair loss over the lateral aspect of the hock and the correlation between the area of hair loss (as calculated using a hock map) and hock lesion scores determined using a pre-existing categorical scale. Six factors were associated with a greater area of hair loss, including cows with locomotion score 3, a cleanliness score (10/28 to 18/28), high daily milk yield (25.1-58.1 kg), poor body condition score (1-1.5), duration of winter housing (≥41 days) and some combinations of cubicle base and bedding materials. Compared with cows housed in cubicles with a concrete base and whole straw or rape straw bedding, cows housed in cubicles with concrete bases with sand or chopped straw bedding had smaller areas of hair loss and cows housed on a mattress base with whole straw or rape straw bedding had larger areas of hair loss. Area of hair loss, as measured on hock maps, was not significantly different between cows with score 1 (median 23.6 cm(2)) and score 2 (median 20.3 cm(2)) on the categorical scale for hock lesions. This suggests that the categorical scale was not reflecting the extent of hair loss and that hock maps are a good alternative for studying the dynamics of hock lesions over time.

Matched MeSH terms: Hair/pathology*; Hair Diseases/etiology; Hair Diseases/epidemiology; Hair Diseases/pathology; Hair Diseases/veterinary*
Fulltext Dental derived stem cell conditioned media for hair growth stimulation

Gunawardena TNA, Masoudian Z, Rahman MT, Ramasamy TS, Ramanathan A, Abu Kasim NH

PLoS One, 2019;14(5):e0216003.
PMID: 31042749 DOI: 10.1371/journal.pone.0216003

Alopecia is a clinical condition caused by excessive hair loss which may result in baldness, the causes of which still remain elusive. Conditioned media (CM) from stem cells shows promise in regenerative medicine. Our aim was to evaluate the potential CM of dental pulp stem cells obtained from human deciduous teeth (SHED-CM) to stimulate hair growth under in vitro and in vivo conditions. SHED and hair follicle stem cells (HFSCs) (n = 3) were cultured in media combinations; i) STK2, ii) DMEM-KO+10% FBS, iii) STK2+2% FBS and profiled for the presence of positive hair growth-regulatory paracrine factors; SDF-1, HGF, VEGF-A, PDGF-BB and negative hair growth-regulatory paracrine factors; IL-1α, IL-1β, TGF-β, bFGF, TNF-α, and BDNF. The potential of CM from both cell sources to stimulate hair growth was evaluated based on the paracrine profile and measured dynamics of hair growth under in vitro conditions. The administration of CM media to telogen-staged synchronized 7-week old C3H/HeN female mice was carried out to study the potential of the CM to stimulate hair growth in vivo. SHED and HFSCs cultured in STK2 based media showed a shorter population doubling time, higher viability and better maintenance of MSC characteristics in comparison to cells cultured in DMEM-KO media. STK2 based CM contained only two negative hair growth-regulatory factors; TNF-α, IL-1 while DMEM-KO CM contained all negative hair growth-regulatory factors. The in vitro study confirmed that treatment with STK2 based media CM from passage 3 SHED and HFSCs resulted in a significantly higher number of anagen-staged hair follicles (p<0.05) and a significantly lower number of telogen-staged hair follicles (p<0.05). Administration of SHED-CM to C3H/HeN mice resulted in a significantly faster stimulation of hair growth in comparison to HFSC-CM (p<0.05), while the duration taken for complete hair coverage was similar for both CM sources. Thus, SHED-CM carries the potential to stimulate hair growth which can be used as a treatment tool for alopecia.

Matched MeSH terms: Hair/drug effects*; Hair/growth & development; Hair Follicle/drug effects; Hair Follicle/growth & development
Which nests to choose: collecting shed hairs from wild orang-utans

Goossens B, Abdullah ZB, Sinyor JB, Ancrenaz M

Folia Primatol., 2004 Jan-Feb;75(1):23-6.
PMID: 14716150
Matched MeSH terms: Hair*
Outer hair cell functioning in infants with iron deficiency anemia

Sundagumaran H, Seethapathy J

Int J Pediatr Otorhinolaryngol, 2020 Nov;138:110393.
PMID: 33152983 DOI: 10.1016/j.ijporl.2020.110393

BACKGROUND: Distortion product otoacoustic emissions (DPOAE) in infants with Iron Deficiency Anemia (IDA) helps in understanding the cochlear status especially the functioning of outer hair cells.
OBJECTIVES: To analyze the presence of DPOAE across frequencies and DP amplitude in infants with and without IDA.
METHOD: DPOAE were recorded on 40 infants with IDA and 40 infants without IDA in the age range of 6-24 months. Cubic DPOAEs (2f1-f2) were measured at six f2 frequencies (1500 Hz, 2000 Hz, 3000 Hz, 4500 Hz, 6000 Hz & 8000 Hz) with primary tone stimulus of intensity L1 equal to 65 dBSPL and L2 equal to 55 dBSPL. Immittance audiometry was performed using 226 Hz probe tone prior to DPOAE recording to ascertain normal middle ear functioning.
RESULTS: DPOAEs were present in all infants with and without IDA across frequencies tested. DP amplitude across the frequencies did not show any statistically significant difference (p hair cell functioning as there were no changes observed in the DPOAE amplitude levels between infants with IDA and infants without IDA. Iron status does not seem to have a direct effect on outer hair cell functioning in infants. However, fine structure DPOAEs can reveal even more precise changes (if any) that are caused due to iron deficiency.

Matched MeSH terms: Hair Cells, Auditory, Outer*
Fulltext Modeling and simulation of artificial hair cell sensor for underwater applications

M.N.M. Nawi, A.A. Manaf, M.R. Arshad

ASM Science Journal, 2013;7(2):144-151.
MyJurnal

This article uses finite volume and finite element methods for optimization of the artificial hair cell sensor. The performance of the sensor was investigated for different materials such as sicon and polysilicon and by varying hair cell dimensions including width and length. The silicon material which has low young modulus was proposed based on the simulation performance. The performance of the hair cell sensor was achieved by increasing the hair cell length while increasing the width did not significantly influence the performance. The
performance of the sensor was studied for its viscous force, deflection, von mises stress and sensitivity. From the simulation, the hair cell with a length of 1600 µm and 80 µm width was suggested for the subsequent analysis. Another way to improve the performance was by modifying the hair cell geometry and it was proved that the modified hair cell was more sensitive, based on the deflection. The angle of flow that hit the hair cell also affected the deflection of the sensor where the zero angle flow which was parallel to the substrate was the most effective angle. The limitations of the performance of hair cell for various fluid velocity were also discussed in this paper.

Matched MeSH terms: Hair; Hair Cells, Auditory
Fulltext Pilomatrixoma: a diagnostic pitfall on fine-needle aspiration cytology of benign ‘Neck Metastases’

Asha’ari ZA, Shiyuti MI, Abdullah K, Selimin A, Sathananthar KS

International Medical Journal Malaysia, 2014;13(2):63-66.
MyJurnal

Pilomatrixoma is a benign tumour that originates from the matrix of the hair root. This rare tumour is usually managed by the dermatologists. The commonest location of this tumour is in the head and neck region; hence, it can be encountered by any doctors with interest in this area. When presented in the neck, this hard tumour may pose a diagnostic challenge. A case report of pilomatrixoma misdiagnosed as a metastatic neck disease from fine-needle aspiration cytology is presented. The mistake in the diagnosis has led to a more aggressive and high morbidity surgery than necessary. It is important that head and neck doctors be aware of this condition and includes it in the differential diagnosis of hard masses presenting in the neck.

Matched MeSH terms: Hair; Hair Diseases
Pyrolytic conversion of human hair to fuel: performance evaluation and kinetic modelling

Krishnakumar P, Sundaramurthy S, Baredar P, Suresh A, Khan MA, Sharma G, et al.

Environ Sci Pollut Res Int, 2023 Dec;30(60):125104-125116.
PMID: 37099105 DOI: 10.1007/s11356-023-26991-6

There are several environmental and human health impacts if human hair waste is not adequately disposed of. In this study, pyrolysis of discarded human hair was carried out. This research focused on the pyrolysis of discarded human hair under controlled environmental conditions. The effects of the mass of discarded human hair and temperature on bio-oil yield were studied. The proximate and ultimate analyses and calorific values of disposed of human hair, bio-oil, and biochar were determined. Further, chemical compounds of bio-oil were analyzed using a gas chromatograph and a mass spectrometer. Finally, the kinetic modeling and behavior of the pyrolysis process were characterized through FT-IR spectroscopy and thermal analysis. Based on the optimized mass of disposed of human hair, 250 g had a better bio-oil yield of 97% in the temperature range of 210-300 °C. The different parameters of bio-oil were: pH (2.87), specific gravity (1.17), moisture content (19%), heating value (19.34 MJ/kg), and viscosity (50 CP). C (56.4%), H (6.1%), N (0.16%), S (0.01%), O (38.4%), and Ash (0.1%) were discovered to be the elemental chemical composition of bio-oil (on a dry basis). During breakdown, the release of different compounds like hydrocarbons, aldehydes, ketones, acids, and alcohols takes place. According to the GC-MS results, several amino acids were discovered in the bio-oil, 12 abundant in the discarded human hair. The FTIR and thermal analysis found different concluding temperatures and wave numbers for functional groups. Two main stages are partially separated at about 305 °C, with maximum degradation rates at about 293 oC and 400-4140 °C, respectively. The mass loss was 30% at 293 0C and 82% at temperatures above 293 0C. When the temperature reached 4100C, the entire bio-oil from discarded human hair was distilled or thermally decomposed.

Matched MeSH terms: Hair/chemistry
A meta-analysis highlighting the increasing relevance of the hair matrix in exposure assessment to organic pollutants

Junaid M, Sultan M, Liu S, Hamid N, Yue Q, Pei DS, et al.

Sci Total Environ, 2024 Mar 20;917:170535.
PMID: 38307287 DOI: 10.1016/j.scitotenv.2024.170535

Owing to a wide range of advantages, such as stability, non-invasiveness, and ease of sampling, hair has been used progressively for comprehensive biomonitoring of organic pollutants for the last three decades. This has led to the development of new analytical and multi-class analysis methods for the assessment of a broad range of organic pollutants in various population groups, ranging from small-scale studies to advanced studies with a large number of participants based on different exposure settings. This meta-analysis summarizes the existing literature on the assessment of organic pollutants in hair in terms of residue levels, the correlation of hair residue levels with those of other biological matrices and socio-demographic factors, the reliability of hair versus other biomatrices for exposure assessment, the use of segmental hair analysis for chronic exposure evaluation and the effect of external contamination on hair residue levels. Significantly high concentrations of organic pollutants such as pesticides, flame retardants, polychlorinated biphenyls and polycyclic aromatic hydrocarbon were reported in human hair samples from different regions and under different exposure settings. Similarly, high concentrations of pesticides (from agricultural activities), flame retardants (E-waste dismantling activities), dioxins and furans were observed in various occupational settings. Moreover, significant correlations (p hair and blood concentrations were observed in majority of studies featuring pesticides and flame retardants. While among sociodemographic factors, gender and age significantly affected the hair concentrations in females and children in general exposure settings, whereas adult workers in occupational settings. Furthermore, the assessment of the hair burden of persistent organic pollutants in domestic and wild animals showed high concentrations for pesticides such as HCHs and DDTs whereas the laboratory-based studies using animals demonstrated strong correlations between exposure dose, exposure duration, and measured organic pollutant levels, mainly for chlorpyrifos, diazinon, terbuthylazine, aldrin, dieldrin and pyrethroid metabolites. Considering the critical analysis of the results obtained from literature review, hair is regarded as a reliable matrix for organic pollutant assessment; however, some limitations, as discussed in this review, need to be overcome to reinforce the status of hair as a suitable matrix for exposure assessment.

Matched MeSH terms: Hair/chemistry
Fulltext Pseudoparaphimosis: a hairy affair

Ng KL, Mahadevan DT, Htun TH, Razack AH, Dublin N

Med J Malaysia, 2011 Aug;66(3):268-9.
PMID: 22111458
Matched MeSH terms: Hair Diseases/diagnosis*; Hair Diseases/etiology; Hair Diseases/therapy
Developmental changes in the facial morphology of the Borneo orangutan (Pongo pygmaeus): possible signals in visual communication

Kuze N, Malim TP, Kohshima S

Am J Primatol, 2005 Apr;65(4):353-76.
PMID: 15834889

Orangutans display remarkable developmental changes and sexual differences in facial morphology, such as the flanges or cheek-pads that develop only on the face of dominant adult males. These changes suggest that facial morphology is an important factor in visual communication. However, developmental changes in facial morphology have not been examined in detail. We studied developmental changes in the facial morphology of the Borneo orangutan (Pongo pygmaeus) by observing 79 individuals of various ages living in the Sepilok Orangutan Rehabilitation Centre (SORC) in Malaysia and in Japanese zoos. We also analyzed photographs of one captive male that were taken over a period of more than 16 years. There were clear morphological changes that occurred with growth, and we identified previously unreported sexual and developmental differences in facial morphology. Light-colored skin around the eyes and mouth is most prominent in animals younger than 3 years, and rapidly decreases in area through the age of approximately 7 years. At the same time, the scattered, erect hairs on the head (infant hair) become thick, dense hairs lying on the head (adult hair) in both sexes. The results suggest that these features are infant signals, and that adult signals may include darkened face color, adult hair, whiskers, and a beard, which begin to develop after the age of approximately 7 years in both sexes. In females, the eyelids remain white even after 10 years, and turn black at around the age of 20; in males, the eyelids turn black before the age of 10. The whiskers and beards of adults are thicker in males than in females, and are fully developed before the age of 10 in males, while they begin to develop in females only after approximately 20 years. White eyelids and undeveloped whiskers and beards may be visual signals that are indicative of young adult females. Our results also show that the facial morphology of the unflanged male is similar to that of the adult female, although it has also been pointed out that unflanged males resemble younger individuals.

Matched MeSH terms: Hair/anatomy & histology; Hair/growth & development; Hair/physiology
Cnestusquadrispinosus, a new species of xyleborine ambrosia beetle from Thailand and Borneo (Coleoptera, Curculionidae, Scolytinae, Xyleborini)

Sittichaya W, Beaver RA

Zookeys, 2018.
PMID: 30429655 DOI: 10.3897/zookeys.795.28384

A new species, Cnestusquadrispinosus, is described from Thailand, Brunei Darussalam, and East Malaysia (Sabah). It is compared to three related species of Cnestus which lack a mycangial tuft of hairs on the pronotum, and have an impressed elytral declivity.

Matched MeSH terms: Hair
Fulltext A case of the Hutchinson-Gilford progeria syndrome

Omar A

Med J Malaysia, 1982 Dec;37(4):362-4.
PMID: 7167089

A case of the Hutchinson-Gilford progeria syndrome (HGPS) in Malaysia is described. A brief discussion of this rare condition and its differential diagnosis follows.

Matched MeSH terms: Hair/abnormalities
Epidemiology of Pediculus humanus capitis infestation in Malaysian school children

Sinniah B, Sinniah D, Rajeswari B

Am J Trop Med Hyg, 1981 May;30(3):734-8.
PMID: 7258487

A survey of 308,101 primary school children in Peninsular Malaysia conducted in 1979 by the School Health Services, Ministry of Health, Malaysia, revealed that 10.7% of children were infested with Pediculus humanus capitis. The prevalence rate was higher in the economically less advanced states of Terenganu (34%), Kelantan (23%), and Perlis (21%) than in the other states (4-13%). Of 14,233 school children examined in the State of Melaka, 26% of Indians, 18.7% of Malays, 6.1% of Europeans, and 0.7% of Chinese had pediculosis. The prevalence rate, which has remained unchanged over the past 5 years, does not appear to vary with age but is higher in children with long hair and those from the lower socioeconomic groups. Boys have a lower infestation rate than do girls. The higher incidence in Indians and Malays correlates well with their lower socioeconomic status in the community, and their cultural habit of maintaining longer hair than do the Chinese. The difference become less apparent in the higher socioeconomic groups.

Matched MeSH terms: Hair/parasitology
Fulltext Extensive Facial Trichoblastoma - A Rare and Disfiguring Condition

Abd Rahim SNH, Ahmad NA, Mohamed-Yassin MS

Am J Case Rep, 2021 Jun 25;22:e932320.
PMID: 34170887 DOI: 10.12659/AJCR.932320

BACKGROUND Trichoblastoma is a rare, benign, cutaneous adnexal neoplasm arising from rudimentary hair follicles. The incidence and prevalence in the general population is unknown. However, most cases occur in adults aged 40 years and older. CASE REPORT A 62-year-old woman presented to our primary care clinic for a hypertension and diabetes followup visit. The doctor, who had never seen the patient before, noticed several small lumps over the patient's eyebrows. After she removed her headscarf and face mask for a thorough examination, numerous skin-colored papules and nodules were seen on her nose, nasal bridge, forehead, and around her eyebrows. She was referred to a dermatologist, and a skin biopsy showed well-circumscribed dermal nests of basaloid cells, with peripheral palisading, and keratin horn cysts surrounded by dense fibrous stroma. These features were consistent with trichoblastoma. She was then referred to a plastic surgeon to discuss further management options. The patient finally chose laser ablation as she was fearful of the other more invasive surgical options. CONCLUSIONS This is a very rare case of extensive facial trichoblastoma. It highlights the need for clinicians to ensure optimal exposure when examining patients. It also highlights the role of biopsies for skin lesions of uncertain etiology. In this case, it helped to rule out basal cell carcinoma, which can be a more locally destructive condition than trichoblastoma. This case also serves as a reminder about the need for ongoing review and referral for further management for conditions for which previous treatment was unsuccessful.

Matched MeSH terms: Hair Diseases*
Fulltext Four cases of pediculosis caused by Pthirus pubis Linnaeus, 1758 (Diptera: Anoplura) from peninsular Malaysia

Pakeer O, Jeffery J, Mohamed AM, Ahmad F, Baharudin O

Trop Biomed, 2007 Dec;24(2):101-3.
PMID: 18209717 MyJurnal

Four cases of pediculosis, two in adults and two in children, caused by the crab-louse, Pthirus pubis Linnaeus, 1758 (Diptera: Anoplura) is reported from peninsular Malaysia. This is the second report of the problem to be documented from the country. Although P. pubis is closely associated with genital hairs, it is, however, also found to occur on the eyelashes, eyebrows, hairs of the body, head and axilla. The few reported cases of pthiriasis probably do not reflect the true situation.

Matched MeSH terms: Hair/parasitology
Isotopic ratio analysis of cattle tail hair: A potential tool in building the database for cow milk geographical traceability

Behkami S, Zain SM, Gholami M, Bakirdere S

Food Chem, 2017 Feb 15;217:438-444.
PMID: 27664656 DOI: 10.1016/j.foodchem.2016.08.130

The potential for the isotopic ratio analysis of cattle tail hair in determining the geographical origin of raw cow milk in Peninsular Malaysia had been investigated in this research using exploratory visualization. A significant positive correlation (p<0.0001) (n=54) was noticed between δ(13)C and δ(15)N in milk with that of hair which indicated that these matrices could be used in tracing the geographical origin of animal produce and tissues, and there is a possibility that hair could be used as a substitute in building the database for the geographical traceability of milk. It was also observed that both hair and milk isotopic ratio correlations exhibited separation between the northern and southern regions. The accuracy of using isotopic ratio in determining geographical discrimination had been clearly demonstrated when several commercial milk samples from the same regions under the study were correctly assigned to the appropriate geographical clusters.

Matched MeSH terms: Hair/chemistry*
Human hair-derived high surface area porous carbon material for the adsorption isotherm and kinetics of tetracycline antibiotics

Ahmed MJ, Islam MA, Asif M, Hameed BH

Bioresour Technol, 2017 Nov;243:778-784.
PMID: 28711807 DOI: 10.1016/j.biortech.2017.06.174

In this work, a human hair-derived high surface area porous carbon material (HHC) was prepared using potassium hydroxide activation. The morphology and textural properties of the HHC structure, along with its adsorption performance for tetracycline (TC) antibiotics, were evaluated. HHC showed a high surface area of 1505.11m(2)/g and 68.34% microporosity. The effects of most important variables, such as initial concentration (25-355mg/L), solution pH (3-13), and temperatures (30-50°C), on the HHC adsorption performance were investigated. Isotherm data analysis revealed the favorable application of the Langmuir model, with maximum TC uptakes of 128.52, 162.62, and 210.18mg/g at 30, 40, and 50°C, respectively. The experimental data of TC uptakes versus time were analyzed efficiently using a pseudo-first order model. Porous HHC could be an efficient adsorbent for eliminating antibiotic pollutants in wastewater.

Matched MeSH terms: Hair/chemistry*
Fulltext Raman and photoluminescence spectroscopy analysis of gamma irradiated human hair

Lam SE, Mat Nawi SN, Abdul Sani SF, Khandaker MU, Bradley DA

Sci Rep, 2021 04 12;11(1):7939.
PMID: 33846448 DOI: 10.1038/s41598-021-86942-4

Preliminary study has been made of black human hair, carbon concentration of some 53%, a model in examining the potential of hair of the human head in retrospective and emergency biodosimetry applications, also offering effective atomic number near to that of water. The hair samples were exposed to [Formula: see text]Co gamma rays, delivering doses from 0 to 200 Gy. Structural alterations were observed, use being made of Raman and photoluminescence (PL) spectroscopy. Most prominent among the features observed in the first-order Raman spectra are the D and G peaks, appearing at 1370 [Formula: see text] and 1589 [Formula: see text] respectively, the intensity ratio [Formula: see text] indicating dose-dependent defects generation and annealing of structural alterations. The wavelengths of the PL absorption and emission peaks are found to be centred at [Formula: see text] nm and [Formula: see text] nm, respectively. The hair samples mean band gap energy ([Formula: see text]) post-irradiation was found to be [Formula: see text] eV, of the order of a semiconductor and approximately two times the [Formula: see text] of other carbon-rich materials reported via the same methodology.

Matched MeSH terms: Hair/radiation effects*
Fulltext A Study on Scalp Hair Health and Hair Care Practices among Malaysian Medical Students

Nayak BS, Ann CY, Azhar AB, Ling ECS, Yen WH, Aithal PA

Int J Trichology, 2017 Apr-Jun;9(2):58-62.
PMID: 28839388 DOI: 10.4103/ijt.ijt_76_16

INTRODUCTION: Scalp care is essential because it determines the health and condition of the hair and prevents the diseases of scalp and hair. The objectives of our study were to correlate race and hair types, to determine the awareness of hair care among Malaysian medical students, and to distinguish the factors that affect the health of hair and scalp.

METHODOLOGY: It was a cross-sectional study wherein validated questionnaires were given to 240 medical undergraduate students who belonged to three ethnic races of Malaysia, i.e., Chinese, Malay, and Malaysian Indians after their informed consent. The results were then analyzed using percentage statistics.

RESULTS: Chinese students had comparatively healthier scalp without dandruff. Most Chinese and Indians had silky type of hair while Malay had dry, rough hair. Chinese and Indians colored their hair and used various styling methods; while among the Malays, this percentage was very less. Regarding hair care practices, males used only shampoo and females used shampoo and conditioner for hair wash. Students also faced dietary and examination-related stress.

CONCLUSION: Results indicate that there exist morphological differences in hair among the studied population. Since most students color their hair and employ various hairstyling methods, they should be educated regarding best hair care practices to improve their scalp hair condition and health.

Matched MeSH terms: Hair; Hair Diseases

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