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8 +1  /  -* 9:;  +1  2  ,- 9:<=E#ects of Electrolyzed-Reduced Water as Artiﬁcial
Hot Spring Water on Human Skin and HairShoichi OKOUCHI+, Hideyuki OHNAMI+, Miku SHOJI, Yoshiaki OHNO+,
Shigeo IKEDA+, Yukoh AGISHI,, Tomoaki HAGIWARA- and Toru SUZUKIDepartment of Materials Chemistry, Faculty of Engineering, Hosei University,Research Institute for Health Resort Medicine
Department of Food Science and Technology, Tokyo University of Marine Science and Technology+Abstract
Water-electrolysis of tap water without membrane followed by passing throughactivated carbon ﬁlter was conducted to produce electrolyzed-reduced water having
approximately neutral and reductive characteristics. It was found that the electrolyzedreduced water is advantageously e#ective in preventing oxidation of ﬁsh-lipid. Daily
bathing in the water for , months decreased ORP (oxidation-reduction potential) andimproved the elasticity of the skins. The water would contribute to suppression ofoxidation/aging of the skin. Moreover, treatment of bleached hair by the water resulted
in improvement in ﬂuency and gloss. We can expect, therefore, that fresh hot springwater has same reductive characteristics as that of the electrolyzed-reduced water.
Key words : Water electrolysis, Reduced water, Artiﬁcial hot spring water, ORP, Aging,Skin, Hair>?@?A : BCDE FGB H IJ K FGDL M  NO P55

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Fig. + =¨67©ª4#   =¨67«G 4/7  %=¨¬ uvwxy0 z0{%|67­ " ,**- Hz0{® # Hz0{§8I=%!j¯ |67%z09° 15 |S± 3_`4}54.{# %DR 2²J2QS ~²J2QSA `%Anopq`%PSF _`4DRF9C/ ³9KS

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NOP.<=.k2 TBA
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Asakawa and Matsushita, +313 ;@ u.q7r v8 wtxy<.z$M{|]}~.*M{.NOn +   ,  . TBA 8 M=2[kFGst. @ ^]n8  )*+,-..
G 2 <=.k2 .
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  +  + ' / +/ ¡k.I
 , ¢£i+* £¤¥z$ +, £¤¥% I + ¦£§¨. ORP, ©Fª«.¬2­gFig. + Production system of electrolyzed-reduced water.
+ !"#$@ L© 67 / ®¯ +2° ,* 1, ± ² 1 ° ³ ++ °% ´2©µ@ §¨.­g §¨.¶

Fig. , Relationship between ORP and pH in tap water, electrolyzed-reduced waters,electrolyzed-cathodic water, electrolyzed-anodic water, and hot spring waters.
,     ORP  pH 

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58

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#EDDJHKHIE !) 9D E ! *.2F+.* ppm LM$ NOPQR%S . T&D(UVU +* 'WL - 'W()X*- + Y
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'+ #h6ij.
/k 0l 10l KES-SE bmnopq@rt2! u13vt!w GP-,** q 4xhyz{|JHK - sB ij. %} ~ee~x567.8 0l   e H
I +* mmῌs 9!%1* (10l -} 9<7I./ !v!t -1 !:! R  3* !;t! S  RῌS HI/k * < I  KES-YN-+ bmnopq@r
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4ij. jJ

/k ,/ =>! /*ῌ $%- -+  ORP  pH 
Fig. ,  \NO DDJHK?@¡3 Fig. + % +ABC

D ORP  pH A¢£ jJ Fig. , x$NB (UVUDcd'+ ῍ @ J
HKAB'+ ῎ @ C0¤¥B DBE}¦U%F§ G¨H +332 ©
DIª ORP ῏ @ £0 ῍F῏ @ ORP J«cdAB¬ V  ­! ,/ «®¯K%51
ORP°+.,-±*.*/3 ²²²²²²²²²²²²²²²²²²²²²²²²²²²²²²῍
O,³.H³³.e ῌ ,H,O
ORP°±*.*/3 pH ²²²²²²²²²²²²²²²²²²²²²²²²²²²²²²²῎,H³³,e ῌ H,
ORP°*.2.±*.*.1 pH ²²²²²²²²²²²²²²²²²²²²²²²²²²²²²῏
Fig. , DB ῏ @IªC (UHIxL´cdC $L´ABCC0 DDµ¶EHI Iª ORP HI) cdC5I +ABCD (:>ABC51¦·M%©-, Fig. -  ¸ 8a> ¹cdH1NhhºY3d£0 DD%YWº[» // ¼ 4,**/8Fig. - !jklm"LM_s¹º¢0)59Changes of the concentrations of red pigment related to oxidized-lipid of saurel.
     !"#$%&'()*+',- .'/  !"#$

 % 0)1()*+',- 23 4567+ ,**-8 # !"9:;&'<=>?+ @A%0)$  !"9BCDE>FG' 4HI ,*** ; Shirahata et al., +3318- JKLME >EN<&'ODN=> P,QRSTUV#$ .'+,ῌXYZ[\ 4]^_`&aW8$W >Nbc =>3d&'< 4efῌgh +333 ; i+ +333 ;i ,**+8- .'/ Fig. - ()$ !"jklm"n !lm"opq
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%&' W_sLM%0)tuvwx#y-- 
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55yD .'LM"E5yD<Dw> ,()>¡¢+'- £ ¤¥LM#$ ¦§n¦<<=>?+ LM"¨©ª$«+'N?,Fig. / _s Fig. 0 $ , z{|pqNrLM¬v 4­¬v 8 ª ,- 2 4Fig. /8 _s¤¥ 4Fig. 08 <'()E 2®#$ +*¯-*῍ °®#$ , ±²D¬v ()*+',- LM¬v$ ³<b£  P,¤¥2£ ¬v5y<=> <P, LM ORP ´$jklmr2>µ¶ , ·{°#$ ORP ´$¸?#1§()ij60

Fig. . Changes of the water contents of skin (bended side of right forearm)by taking a bath with electrolyzed-reduced water.
Sample + ; daughter of ,+ years old, sample , ; mother of /+ years old,sample - ; father of /- years old.
 .   
`abc + ; ,+ d0e `abc , ; /+ d0fg `abc - ; /- d0hg

Fig. / Changes of the elasticity coe$cients of skin (bended side of forearm)by taking a bath with electrolyzed-reduced water.
Sample + ; daughter of ,+ years old, sample , ; mother of /+ years old,sample - ; father of /- years old.
 /    !"  

  !"# +333 ;,**-$ % &'()*%+,-./ 0 ORP 1 2 345 6789,-% :9   0;<=>? @: A0 . BCDE+ Fig. . FFig. 0 GH0 IJK 0LMNOP8QRSTUVETW: XETYZ +33,$ FFig. .  [ 0*\] UVET+FF^_ &'()*06789,-» // ¼ 6,**/<TUVWXYZ[\MsEt"]

61

Fig. 0 Changes of the elasticity coe$cients of skin (instep) by taking a bathwith electrolyzed-reduced water.
Sample + : daughter of ,+ years old, sample , : mother of /+ years old,sample - : father of /- years old.
0  ! "#$% ORP      ! "#$%&'()"*+( ,-./01*2
345 6789:;< =45 6>8?@A;<  (B)"*+ +*45 C DEF G+ HIJ()"*+ K+L M

NO'P*Q(1* +*45R*1S  TUVWXYZ[\M(]^')"*+-. _9`abc9dI efFg,-Eh ijkFg,-Elm nopq,-Er*1 sEt - uWvwm,-Exyz {Jj K _9`abc9d| efFgsEtijkFg,-}hsEtlm~*+Q nopqsEt - uWvwm,-}
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r*1¸!@?ª}' TUVWXM}r*1¹(º"}

62Fig. 1

E#ects of the waters on the kinetic friction coe$cients (m) of hair.
 1  m Fig. 2
 2

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E#ects of the waters on the ratio of R/S.
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Asakawa, T. and Matsushita, S. (+313) : Thiobarbituric acid test for detecting lipid peroxidides, Lipids, +., .*+῏.*0.

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Okouchi, S., Suzuki, M., Sugano, K., Kagamimori, S. and Ikeda, S. (,**,) : Water desirable forthe human body in terms of OxidationReduction Potential (ORP) to pH relationship, J.
Food Sci., 01, +/3.῏+/32.

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Shirahata, S., Kabayama, S., Nakano, M., Miura, T., Kusumoto, K., Gotoh, M., Hayashi, H.,
Otsubo, K., Morisawa, Y. and Katakura, Y. (+331) : Electrolyzed-reduced water scavenges
active oxygen species and protects DNA from oxidative damage, Biochem. Biophys. Res.
Comms., ,-., ,03῏,1..
Pikul, J., Leszczyski, D.E. and Kummerrow, F.A. (+32-) : Elimination of samples autoxidation
by butylated hydroxytoluene additions before thiobarbituric acid assay for malonadehyde in fat from chicken meat, J. Agr. Food Chem., -+, +--2῏+-.,.