Trichology and Cosmetology

Open journal

ISSN 2771-7461

Is There Scientific Evidence that Panax Promotes Hair Growth?

Frederico EHFF*, Sá-Caputo DC, Dionello CF, Cardoso ALB, Morel DS, Maiworm A, Guimarães CAS, Santos R, Guedes-de-Aguiar EO, Gonçalves CR, Carvalho-Lima RP, Kutter CR, Machado-Rocha L, Pereira FG, Brandão-Sobrinho-Neto S, Jaña- Rosa A, Neves RF, Moreira-Marconi E, Paineiras-Domingos LL, Costa-Cavalcanti RG, Almeida-Farias C, Souza PL, Paoli S, Presta GA and Bernardo-Filho M

Éric H.F.F. Frederico

Laboratório de Vibrações Mecânicas e Práticas Integrativas e Complementares, Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Avenida 28 de Setembro, 87, fundos, 4º andar 20551031, Rio de Janeiro, RJ, Brazil; Tel/Fax: 55-21-28688332; E-mail:


In cosmetology are considered studies and applications of the beauty treatments. Skin care, cosmetics, hairstyling, manicures/pedicures and electrology are subjects related to the cosmetology. Trichology is that branch of dermatology involved with scientific investigations of the health of hair and scalp.1

Healthy skin is an excellent barrier maintaining balance between the internal and external environment of the body. In the skin are found several structures with different functions, as the hair.2 Hair loss, in general, is an undesirable disorder in which the hair falls out from skin areas where they are usually present, such as the scalp and the body. This loss interferes with the many useful biologic functions of the hair, including sun protection (mainly to the scalp) and dispersal of sweat gland products. As hair cover to the scalp has psychological importance in our society, patients with hair loss suffer tremendously. In cosmetology, although the use of natural products can be considered as a fancy, research related to the hair growth has been considered.3

The causes of hair loss are controversial and there is no agreement about the main factors that cause the loss of hair, which is a universal complaint. It affects the both genders and depends on the race since the humankind existed.3,4 Among the factors that can contribute to the hair loss include (i) genetic predisposition, (ii) hormonal factors, (iii) disease states and (iv) the use of chemotherapeutic agents.5

Various medical treatments aimed at arresting the progression of the hair loss have become available (i) surgical treatments are constantly being refined and (ii) medications, such as minoxidil and finasteride, that are the only two drugs approved by the Food Drug Administration (FDA), USA for hair growth in men.

The treatment of hair loss depends on the knowledge of its etiology and of the progression of this undesirable condition. Angiogenesis (through endogenous substances), androgen antagonism, vasodilatation through potassium channel opening 5-α reductase inhibition and modulation of hair cycle are some of the non-surgical therapeutic strategies for the hair growth promotion.6,7

Minoxidil is the only drug available for women with androgenetic alopecia. Besides having hair growth promotion effect, therapy with the synthetic drug has become questionable due to their occasional lack of efficacy, safety and their potential side effects.3

Integrative and complementary practices involve several procedures in healthcare. These practices are related to the disease prevention and health promotion.8,9 Some of them are related to the Traditional Chinese Medicine, as phytotherapy and acupuncture.8 In the phytotherapy are used medicinal plants in different forms. The utilization of natural products, as the medicinal plants in the art of healing is an ancient form of treatment of different diseases.9

In cosmetology, research related to the use of herbal medicines for hair growth has been considered.5 Moreover, Patel et al3 have pointed out that various medicinal plants have been used for care of the hair and hair growth potential activity. Considering the hair loss (alopecia), Patel et al3 reported that there are various causes for this loss and the phenomenon related to this, it is still poorly known. Natural products are gaining popularity mainly due to, in general, their fewer side effects. Herbal medicines have been widely used for alopecia treatment since ancient times as reported in Ayurveda, Chinese and Unani systems of medicine.

Kumar et al10 reported that the hair grows from follicles of the dermis and it is found exclusively in mammals. Zhang et al11 described that the hair is a complex filamentous biomaterial that has a structure with many layers including, from outside in, the cuticle, the cortex and the medulla, all bound by the cell membrane.

In mammals, hair plays a vital role in thermal insulation and for social and sexual communication, both visually and as a means for dispersing scents secreted by skin glands. Humans are relatively hairless compared to other mammals and human hair has no known significance for survival of species. However, it remains an important cosmetic asset.12

Among the medicinal plants used to treat the hair loss and to promote the hair growth, there is the Panax ginseng. Ginseng radix is the steamed and dried root of Panax ginseng.1315

Panax ginseng is traditionally used as an important medicinal herb worldwide for more than 5,000 years.16 It is a semishade perennial plant originally from the Eastern Asia regions. It belongs to the family Araliaceae, and is known to possess various pharmacological effects, such as anti-inflammatory, antioxidation, antitumor, antidiabetic and antihepatotoxicity.17,18 In addition, Matsuda et al19 have reported that Panax ginseng is able (i) to improve the constitutional tendencies to poor body condition, (ii) to promote appetite, (iii) to increase vitality and (iv) to reduce over sensitivity to cold. It contains several chemical components, as ginsenosides, essential oil, sesquiterpenes, polyacetylenes, polysaccharides, peptidoglycans, steroid, choline, vitamin- B, C, E, fatty acid, carbohydrates, and amino acids. Moreover, it is reported that a 70% methanolic extract from red ginseng seems to have superior activity to that of the white ginseng in a hair growth-promoting assay using mouse vibrissal follicles in organ culture. The activity is credited to the saponin component of ginseng.

Studies revealed that ginseng acts as a 5-α reductase inhibitor.6,7 Ginsenosides Ro enhances in vivo hair re-growth based on their inhibitory activity against 5-α reductase in the androgenetic alopecia model.20

As authors have demonstrated the possibility of medicinal plants act in the process involving the hair loss and/ or hair growth,21,22 the purpose of this study was to review the published researches concerning the use of Panax ginseng in investigations involving the hair growth. Considering the findings described in the literature, it is hypothesized an improvement in the hair growth due to the Panax ginseng.


Search Strategy and Selection of the Studies

This systematic review of scientific studies followed the guidelines of the Transparent Reporting of Systematic Reviews and Meta-Analyses (PRISMA statement).23 One database was systematically searched for experimental trials in vivo and in vitro. The papers were searched in the PubMed, (http://www. on February 14th, 2016. The search was performed using the keyword (i) “Ginseng radix”, (ii) “hair loss”, (iii) “hair growth”, (iv) “Ginseng radix” AND “hair growth”, (v) “Ginseng radix” AND “hair loss”, (vi) “Medicinal plants” AND “hair growth”, (vii) “Medicinal plants” AND “hair loss”, (viii) “Panax ginseng”, (ix) “Panax ginseng” AND “hair growth” and (x) “Panax ginseng” AND “hair loss”.

Inclusion and Exclusion Criteria

A systematic selection of the articles was carried out by three independent examiners based on the following inclusion criteria: (i) Biological activity: hair growth activity of Panax ginseng; (ii) Plant material: extract from Panax ginseng; (iii) Study design: experimental trials in vitro and/or in vivo (with Panax ginseng); (iv) Language: articles written in English. In addition, ethnobotanical and ethnopharmacological surveys, case reports, expert opinion or consensus statements were excluded, as those have used Panax ginseng mixed with other product.


Table 1 shows the number of publications found in the PubMed involving the keywords that were searched. It is possible to verify a strong interest in studies involving “hair loss” and “hair growth”, with more than three thousands papers. It is also observed that about 0.43% and 0.19% of the articles with the keyword “Panax ginseng” are related to “hair growth” and “hair loss”, respectively.

Table 1: Number of publications (database PubMed) involving Panax ginseng and hair growth/hair loss.


Number of Publication

Ginseng radix


Ginseng radix” AND “hair growth”


Ginseng radix” AND “hair loss”


“hair growth”


“hair loss”


“Medicinal plants” AND “hair growth”


“Medicinal plants” AND “hair loss”


Panax ginseng


Panax ginseng” AND “hair growth”


Panax ginseng” AND “hair loss”


According to a previously set strategy, literature searches involving the keywords “Ginseng radix” AND “hair growth”, “Ginseng radix” AND “hair loss”, “Panax ginseng” AND “hair growth”, “Panax ginseng” AND “hair loss”, “medicinal plants” AND “hair growth” and “medicinal plants” AND “hair loss” resulted in 29 articles. Eight publications met the inclusion criteria and were included in the final review after thorough analysis (Figure 1).

Figure 1: Flow diagram of the search strategy comprising the identification of potentially relevant material, and preliminary screening and final selection of the studies included in this review (based on PRISMA statements).

Panax ginseng; Hair loss; Hair growth; Ginsenoside.

It is possible to see in Table 2 the aim, the experimental model used and the plant material or the chemical compound related to the Panax ginseng ginsenoside.13,20,21 of the selected papers. There is a predominance of experimental procedures with the compound Only one study14 does not specify what part of the plant/chemical compound that was used. The aim of these selected works was mainly related to investigation on the molecular and cellular mechanisms responsible for hair growth in presence of a chemical component of the Panax ginseng. It is possible to see in Table 3 the results and conclusion of the selected studies. Despite the different protocols and procedures, the results indicated a hair growth due the treatment with Panax ginseng. According the majority of the studies1315,24 the Panax ginseng seemed to be effective in the treatment of hair growth.

Table 2: Information about the aim, experimental procedure and plant material or chemical component related to the Panax ginseng used on the selected studies.

Reference Aim Experimental procedure Plant material/Chemical component


To investigate the molecular and cellular mechanisms responsible for HG promoting effect of GRe in vitro and in vivo. Investigation of the HG in animals. Isolation and culture of C57BL/6 mouse vibrissa HFs. Cell culture and western blot analysis. High quality mRNA extract and NGS. MA datasets and systemic analysis. GRe


To investigate the synergistic effect of each Eclipta alba (L.) Hassk, Asiasarum sieboldii (Miq.) F. Asiasari radix, and Panax ginseng for HG potential on nude mice, as these mutant mice genetically lack hair. Chromatographic analysis. Toxicity studies. Treatment protocol of extracts on nude mice. Measurement of hair density and length. Evaluation of hair existing area. Histologic assessment of HG. BrdU immunohistochemistry. Dried roots (Panax ginseng)


To identify the molecules through which Rg3 stimulates HG. The thymidine incorporation for measuring cell proliferation was determined. Culture of human dermal papillae cells. Thymidine incorporation assay. RNA isolation. MA. Real-time PCR. Immunohistochemistry. Image acquisition and protein quantification. Ginsenoside Rg3


To investigate the hair growth efficacy and safety of KRG in AA comparing corticosteroid ILI alone patient group with ILI with KRG taking patient group using Folliscope 2.5 for 12 weeks. Phototrichogram. Expert panel assessment of global photographs. Korean red ginseng


To determine how ginsenosides prevent HL and investigate the effects of ginsenosides on cell genesis in different phases of adult HFs, using BrdU as a marker for dividing cells. BrdU labeling. Immunohistochemical staining. Ginsenosides Rb1 and Rd


To evaluate the effects of FPG on proliferation and apoptosis of human hair DPCs. Cells and growth condition. Cell viability assay. Immunoblot analysis. HG activity in vivo Ginsenoside Re (5.99%) was revealed as the major component of the extract.


This report deals with the HG promoting effect of Ginseng Radix on vibrissal HFs (excised from the upper lip region of mice) in order to explore resources involved in the acceleration and promotion of HG. Organ culture of mouse vibrissal HFs. Measurement of length of vibrissal HFs. Red Ginseng or white ginseng and ginsenosides


To investigate the effect of the water fraction of Panax ginseng on apoptosis and the formation of medullary cell in the HFs of irradiated mice Adult N:GP(s) mice with HFs synchronously in the middle of the HG cycle received doses of gamma-radiation. HFs were analyzed either 12 hours after irradiation with 2 Gy in the experiment on the apoptosis, or 3 days after 3 Gy in the experiment on the forming medulla. The number of medullary cells per unit length (100 microns) was measured by H and E staining. Apoptosis was detected by a non ISEL technique and H and E stain applied to histologic sections. Water fraction of Panax ginseng
BrdU-5-bromo-2′ deoxyuridine, NGS-next-generation sequencing, ILI-intra-lesional injection, KRG-Korean red ginseng, HFs-hair follicles, HG-hair growth, HL-hair loss, Gy-gray, H-hematoxylin, E-eosin, ISEL-isotopic in situ DNA end-labeling, GRe-ginsenoside Re, MA-Microarray, N:GP(s)

Table 3: Results and conclusion of findings reported on the selected studies.





Topical treatment of GRe increased the hair shaft length and hair existent time, comparable to the minoxidil. GRe stimulated hair shaft elongation in the ex vivo cultures of vibrissa HFs isolated from C57BL/6 mouse. Systemic transcriptome analysis by next generation sequencing demonstrated that TGF-b-pathway related genes were selectively down-regulated by treatment of GRe in vivo, and the same treatment suppressed TGF-binduced phosphorylation of ERK in HeLa cells. GRe is the effective constituent in the ginseng on hair promotion via selective inhibition of the HG phase transition related signaling pathways, TGF-β signaling cascades.


The hair density and length of Eclipta alba treated mice were increased. HG area was visible in Eclipta alba treated mice. Mice treated with Asiasari radix and Panax ginseng had hair loss. Histomorphometric observation of nude mice skin samples revealed an increase in number of HFs. The presence of follicular keratinocytes was confirmed by BrdU labeling, S-phase cells in HFs. Eclipta alba extract and/or phytochemicals strongly displayed incomparability of hair growth promotion activity than others. Thus, the standardized Eclipta alba extract can be used as an effective, alternative, and complementary treatment against HL.


Reverse transcription polymerase chain reaction showed dose-dependent increases in VEGF mRNA levels on treatment with Rg3. Immunohistochemical analysis showed that expression of VEGF was up-regulated by Rg3 in human DP cells and in mouse HFs. CD8 and CD34 were also up-regulated by Rg3 in the mouse HFs. It may be concluded that Rg3 might increase HG through stimulation of HF stem cells and it has the potential to be used in HG products.


At the 12th week after initiation, the result of expert panel assessment of global photographs showed improvement. The hair density and hair thickness, measured by Folliscope 2.5, also showed a tendency of some improvement. The efficacy of KRG in the treatment of AA and recommend KRG as a useful complimentary food for gaining efficacy of treatment for AA was observed.


Treatment with ginsenosides Rb1 and Rd increased cell proliferation in both anagen

and telogen of HFs. Investigation of p63 demonstrated that up-regulation of p63 expression in the matrix and outer root sheath might be one of the mechanisms by which ginsenosides Rb1 and Rd promote cell proliferation in HFs.

Ginsenoside promotes hair growth through p63 induction in follicular keratinocytes and indicates that ginsenosides Rb1 and Rd might be developed as a therapeutic agent for the prevention of HL.


FPG extract significantly increased the proliferation of DPCs in dose and time dependent manners. FPG extract also enhanced Bcl-2 expression and decreased Bax expression compared with control. Significant elongations of anagenphase during hair cycle after application of FPG were evaluated by photographical and histological observations FPG extract improves the cell proliferation of human DPCs through anti apoptotic activation. Topical administration of FPG extract might have hair regeneration activity for the treatment of HL.


Panax ginseng, ginsenoside-Rb1 (G-Rb1) exhibited activity, but ginsenoside-Rg1 (G-Rg1) and -Ro (G-Ro) were ineffective. Additionally, 20(S)-ginsenoside-Rg3 (20(S)-G-Rg3) formed by the processing of red ginseng from the crude root of Panax ginseng Panax ginseng also showed HG promoting activity. These results indicate that Ginseng Radix possesses hair growth promoting activity, and its bioactive components are partially attributable to the ginseng saponin components.


Ginseng administration before irradiation resulted in a suppression of apoptosis, as shown by a reduced number of cells stained with ISEL for fragmented DNA, both i.p. (0.3 mg/head) and p.o. (2 mg/ml of drinking water) treatment. Ginseng treatment increased the number of medullary cell per unit length as compared with the vehicle treated mice.  The water fraction of ginseng can exert a potent effect on the recovery of the HFs by its combined effects on proliferation and apoptosis of the cells in the HF.
BrdU – 5-bromo-2′ deoxyuridine, NGS – Next-generation sequencing, ILI – Intra-lesional injection, KRG – Korean red ginseng, HFs – Hair follicles, HG – Hair growth, HL – hair loss, Gy – gray, H – hematoxylin, E – eosin, ISEL – Isotopic in situ DNA end-labeling, GRe – ginsenoside Re, VEGF – Vascular endothelial growth factor, ISEL – Isotopic in situ DNA end-labeling, TGF-β – transforming growth factor beta, ERK – Extracellular-signal-regulated kinases, FPG – Fructus Panax ginseng, DPC – Dermal papilla cells.

In cosmetology, several subjects are related to the study and application of the beauty treatments have been considered; such as skin care, cosmetics, hairstyling, manicures and pedicures, and electrology. Concerning to the cosmetology, trichology is involved with scientific investigations of the health of hair and scalp.1 The skin is a barrier in the body to maintain the balance between the internal and external environment of the body, and the hair is found in it.2 Hair loss, in general, is an undesirable disorder and strategies to avoid the hair loss and to promote the hair growth are desirable. Among these strategies, the use of medicinal products would be considered.1921

The utilization of natural products, as the medicinal plants is an ancient form of treatment of different diseases.28 This consideration justifies more studies about the mechanism of action and the efficacy of these natural products to be validated scientifically.29 Various medicinal plants have been used for care of the hair and they promote hair growth.3 It is also observed that about 0.43% and 0.19% of the articles with the keyword “Panax ginseng” are related to “hair growth” and “hair loss”, respectively (Table 1). Eight studies have reached the inclusion criteria to be analyzed (Figure 1).

In almost all of these investigations, the conclusions indicated that Panax ginseng or some chemical compound seemed to be effective in the treatment of hair growth.13,19,24,27 Begum et al26 had shown some results about hair growth indicating possible effects of the various medicinal plant extracts, and among them, the Panax ginseng.

Due to, in general, their fewer side effects and better formulation strategies, the natural products are gaining popularity. Panax ginseng have stood out as a promising natural source with relevant effects in treatment of hair loss,13,15 despite the small number of publications in the PubMed database involving the keyword Panax ginseng AND “hair loss”, as shown in Table 1.

The chemical components of the plant used were similar in most of studies using the dried roots (Table 2), namely ginsenoside who is the major bio-active ingredients included in Panax ginseng. The aim of these selected works was mainly investigate the molecular and cellular mechanisms responsible for hair growth. As it was shown in Table 2, different experimental procedures were used.

The main findings of the selected papers reveal the importance of the Panax ginseng in improving hair growth. There fore it might be developed as a therapeutic agent for the prevention of alopecia. The studies on the hair follicle, demonstrate that it undergoes successive cyclic periods of growth, involving an (i) active growing phase (anagen) during which the previous hair is shed, (ii) a small transitionary regressive phase (catagen) and (iii) a dormant resting phase (telogen),10 which allows the follicle to produce different types of hair in response to hormonal changes. Each strand of hair on the human body is at its own stage of development. Once the cycle is complete, it restarts and a new strand of hair begins to form.

The findings with Panax ginseng are important due to the fact that minoxidil and finasteride used for treatment of androgenic alopecia may have side effects.30 The associated adverse events with the use of these synthetic compounds include erythema, scaling, pruritus, gynaecomastia, dermatitis, itching or skin rash. In consequence, due to these undesirable side effects, alternative products have been investigated to treat the alopecia, as the natural products.31

The current study has several limitations that must be considered in the interpretation of the findings in this review. It is suggested to take care in generalizing these results due to the analyzed publications have methodological variations concerning to the experimental procedure utilized, and design of the protocols. In addition, although we have tried to retrieve the articles following the selected keywords, it was not retrieved all the papers identified for inclusion, including articles that were not published in English and articles published in journals that were not indexed in the PubMed database.

The findings reported in this study are also relevant considering that the management of alopecia is a target of a steadily growing multi-billion dollar market worldwide. Great opportunities are associated with pharmaceutical hair loss management, but still there is no radical improvement in the availability of specific therapies. In this case, the results with Panax ginseng could be important to have alternative chemical products to manage the loss hair.


Putting together the findings described in this study and considering the results in the publications, it is possible to conclude and to suggest that the use of Panax ginseng could be suitable to try to improve the hair growth. However, it is important to consider the limited number of publications available in the PubMed involving searches evaluating the hair growth effect of Panax ginseng.



1. Trichology and Cosmetology – Open Journal. Web site. Accessed on February 22, 2016.

2. Szyszkowska B, Lepecka-Klusek C, Kozowicz K, Jazienicka I, Krasowska D. The influence of selected ingredients of dietary supplements on skin condition. Postepy Dermatol Alergol. 2014; 31: 174-181. doi: 10.5114/pdia.2014.40919

3. Patel S, Sharma V, S Chauhan N, Thakur M, Dixit VK. Evaluation of hair growth promoting activity of Phyllanthus niruri. Avicenna J Phytomed. 2015; 5: 512-519.

4. Patna P, Varghese D, Balekar N, et al. Formulation and evaluation of herbal hair oil for alopecia management. Planta indica. 2006; 2: 27-30.

5. Roy RK, Thakur M, Dixit VK. Development and evaluation of Polyherbal formulation for hair growth promoting activity. J Cosm Dermatol. 2007; 6: 108-112. doi: 10.1111/j.1473-2165.2007.00305.x

6. Liu WK, Xu SX, Che CT. Anti-proliferative effect of ginseng saponins on human prostate cancer cell line. Life Sci. 2000; 67: 1297-306. doi: 10.1016/S0024-3205(00)00720-7

7. Prager N, Bickett K, French N, Marcovici G. A randomized, double-blind, placebocontrolled trial to determine the effectiveness of botanically derived inhibitors of 5-alpha-reductase in the treatment of androgenetic alopecia. J Alter Comp Med. 2002; 8: 143-52. doi: 10.1089/107555302317371433

8. World Health Organization. Traditional Medicine Strategy. Web site., 2014-2023, Accessed February 14, 2016.

9. National Policy on Integrative and Complementary Practices of the SUS, Ministry of Health of Brazil. Web site. 2008; Accessed February 14, 2016.

10. Kumar N, Singh S, Manvi. Hair growth activity of Trichosanthes dioica R. Leaves. J Pharmacog Phytochem. 2011; 3: 30.

11. Zhang Y, Alsop RJ, Soomro A, Yang FC, Rheinstädter MC. Effect of shampoo, conditioner and permanent waving on the molecular structure of human hair. PeerJ. 2015; 3: e1296. doi: 10.7717/peerj.1296

12. Andrew GM. The Control of Hair Growth: An Overview. J Inves Dermatol. 1993; 10: 523-527.

13. Li Z, Ryu SW, Lee J, Choi K, Kim S, Choi C. Protopanaxatirol type ginsenoside Re promotes cyclic growth of hair follicles via inhibiting transforming growth factor β signaling cascades. Biochem Biophys Res Commun. 2016; 470: 924-929. doi: 10.1016/j.bbrc.2016.01.148

14. Oh GN, Son SW. Efficacy of korean red ginseng in the treatment of alopecia areata. J Ginseng Res. 2012; 36: 391-395. doi: 10.5142/jgr.2012.36.4.391

15. Shin DH, Cha YJ, Yang KE, Jang IS, Son CG, Kim BH, Kim JM. Ginsenoside Rg3 up-regulates the expression of vascular endothelial growth factor in human dermal papilla cells and mouse hair follicles. Phytother Res. 2014; 28: 1088-1095. doi: 10.1002/ptr.5101

16. Shukla R, Kumar M. Role of Panax ginseng as an antioxidant after cadmium induced hepatic injuries. Food Chem Toxicol. 2009; 47: 769e73. doi: 10.1016/j.fct.2009.01.002

17. Ernst E. Panax ginseng: an overview of the clinical evidence. J Ginseng Res. 2010; 34: 259e63.

18. Kim SK, Park JH. Trends in ginseng research in 2010. J Ginseng Res. 2011; 35: 389e98. doi: 10.5142/jgr.2011.35.4.389

19. Matsuda H, Yamazaki M, Asanuma Y, et al. Promotion of hair growth by Ginseng radix on cultured mouse vibrissal hair follicles. Phytother Res. 2003; 17: 797-800. doi: 10.1002/ ptr.1241

20. Murata K, Takeshita F, Samukawa K, Tani T, Matsuda H. Effects of ginseng rhizome and ginsenoside Ro on testosterone 5α-reductase and hair re-growth in testosterone-treated mice. Phytother Res. 2012; 26: 48-53. doi: 10.1002/ptr.3511

21. Park S, Shin WS, Ho J. Fructus Panax ginseng extract promotes hair regeneration in C57BL/6 mice. J Ethnopharmacol. 2011; 138: 340-344. doi: 10.1016/j.jep.2011.08.013

22. Kim MH, Choi YY, Lee JE, Kim K, Yang WM. Topical treatment of hair loss with formononetin by modulating apoptosis. Planta Med. 2016; 82: 65-69. doi: 10.1055/s-0035-1557897

23. Preferred Reporting Items for Systematic Reviews and Meta-Analyses. PRISMA. Web site. http://www.prisma-statement. org. Accessed January 15, 2016.

24. Li Z, Li JJ, Gu LJ, Zhang DL, Wang YB, Sung CK. Ginsenosides Rb1 and Rd regulate proliferation of mature keratinocytes through induction of p63 expression in hair follicles. Phytother Res. 2013; 27: 1095-1101. doi: 10.1002/ptr.4828

25. Park S, Shin WS, Ho J. Fructus panax ginseng extract promotes hair regeneration in C57BL/6 mice. J Ethnopharmacol. 2011; 138: 340-344. doi: 10.1016/j.jep.2011.08.013

26. Begum S, Lee MR, Gu LJ, Hossain MJ, Kim HK, Sung CK. Comparative hair restorer efficacy of medicinal herb on nude (Foxn1nu) mice. Biomed Res Int. 2014; 2014: 319795. doi: 10.1155/2014/319795

27. Kim SH, Jeong KS, Ryu SY, Kim TH. Panax ginseng prevents apoptosis in hair follicles and accelerates recovery of hair medullary cells in irradiated mice. In Vivo. 1998; 12: 219-222.

28. Harada N, Okajima K, Narimatsu N, et al. Effect of topical application of Raspberry ketone on dermal production of insulin-like growth factor-I in mice and on hair growth and skin elasticity in humans. Growth Horm IGF Res. 2008; 18: 335-344. doi: 10.1016/j.ghir.2008.01.005

29. Khan UA, Rahman H, Niaz Z, et al. Antibacterial activity of some medicinal plants against selected human pathogenic bacteria. Eur J Microbiol Immunol (Bp). 2013; 3: 272-274. doi: 10.1556/EuJMI.3.2013.4.6

30. Libecco JF, Bergfeld WF. Finasteride in the treatment of alopecia. Exp Opin Pharmacother. 2004; 5: 993-940. doi: 10.1517/14656566.5.4.933

31. Price VH, Menefee E, Strauss PC. Changes in hair weight and hair count in men with androgenetic alopecia, after application of 5% and 2% topical minoxidil, placebo or no treatment. J Amer Acad Dermatol. 1999; 41: 717-721. doi: 10.1016/ S0190-9622(99)70006-X


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