The objective of this study is to explore an effect of Moutan Cortex Radicis containing antioxidant activities that may inhibit active oxygen in order to mitigate hair damage by an effect of active oxygen being produced by UV radiation and in a proces...
The objective of this study is to explore an effect of Moutan Cortex Radicis containing antioxidant activities that may inhibit active oxygen in order to mitigate hair damage by an effect of active oxygen being produced by UV radiation and in a process of permanent wave treatment.
For this objective, features of Moutan Cortex Radicis ethanol extract as raw material of hair cosmetics was investigated and anti-oxidant activity, cytotoxicity, anti-inflammatory, antibacterial effect of active ingredients in Moutan Cortex Radicis extract were measured. Hair damage degree was evaluated at the time of UV radiation after permanent wave treatment by manufacturing Moutan Cortex Radicis microcapsule hair treatment based on above findings and following result was deduced.
As antiradical activity of 84.7% was represented in concentration of 1000 ㎍/㎖of DPPH antiradical activity, a result most near to positive control group, Vit C was obtained. In antiradical activity of ABTS, a little lower value than that of positive control group was represented but as antiradical activity of 66.1% was represented in concentration of 1000 ㎍/㎖ of Moutan Cortex Radicis, it could be confirmed that as concentration was increased, antiradical activity was increased as well. Contents of polyphenol and flavonoid showed 106.4 ± 0.003 ㎎/g and 112.9 ± 0.004, respectively. As a result of measuring cell survival rate by using Raw 264.7 cell in order to determine cytotoxicity status of Moutan Cortex Radicis extract, Moutan Cortex Radicis extract rather showed the result of no cytotoxicity under low concentration. As a result of investigating NO generation inhibitory effect for Raw 264.7 cell being induced by LPS, as concentration of Moutan Cortex Radicis extract was increased, NO production amount showed a tendency of being decreased. As a result of measuring growth inhibition size by using paper disc measuring method in order to measure antibacterial potency against Propionibacterium acnes and Staphylococcus aureus inducing skin disease, high antibacterial potency was observed in Propionibacterium acnes under the concentration of 100 ㎎/㎖ and that of Staphylococcus aureus was observed from the concentration of 10 ㎎/㎖.
As a result of performing human body occlusive patch test, no skin irritation was observed and so, it was confirmed that use of Moutan Cortex Radicis microcapsule hair treatment was not harmful to human health. As a result of measuring wave efficiency, general permanent wave treatment group showed wave formation rate of 18.26 ± 0.49% but as wave showed wide interval of 29.48 ± 2.08㎜, wave efficiency was confirmed to be low. Whereas, wave formation rate of hair was represented to be high as 20.74 ± 0.56% at the time of pre-treatment of Moutan Cortex Radicis microcapsule hair. As wave showed the most narrowed interval as 23 ± 2.44 ㎜, its wave efficiency was confirmed to be the highest.
As a result of measuring tensile strength, that of general permanent wave treatment group was represented to be very low as 75.55 ± 13.09 gf/㎜2. As tensile strength of pre-treatment group of Moutan Cortex Radicis microcapsule hair and that of post treatment group were represented as 102.09 ± 12.36 gf/㎜2 and 102.60 ± 11.28 gf/㎜2, respectively, hair strength showed significantly high result than that of general permanent wave treatment group. As a result of measuring elongation, that of general permanent wave treatment group was represented as 145.47 ± 10.63% and compared to this result, as pre-treatment and post-treatment of Moutan Cortex Radicis microcapsule hair were represented as 158.71 ± 8.82&, 159.93 ± 12.87%, respectively, hair coherence of Moutan Cortex Radicis microcapsule hair treatment was confirmed to be more strong. In particular, as elongation of pre-treatment of Moutan Cortex Radicis microcapsule hair was represented to be high as much as that of post-treatment in spite of it being rinsed out in a process of washing after permanent wave treatment, it was represented to be effective for preventing hair damage.
As a result of measuring cuticle by using SEM, while UV radiated hair after general permanent wave treatment showed severe separation of cuticle and uneven scale, it was confirmed that scale of pre-treatment group and post-treatment group of Moutan Cortex Radicis microcapsule hair was solidly fixed and exfoliation and uneven surface phenomenon were hardly observed and hair damage prevention effect of Moutan Cortex Radicis microcapsule hair treatment was represented to be high.
As a result of observing hair microstructure by using AFM, in case of UV radiated hair after general permanent wave treatment, uneven phenomenon of cuticle was severe, scale arrangement was not uniformed and swelling site was frequently observed in topography image, 3D image and line profile graph. However, at the time of pre-treatment, post-treatment of Moutan Cortex Radicis microcapsule hair, smooth scale surface and clear scale profile could be confirmed. As a result of measuring roughness, while general permanent wave treatment group showed very high value as 264.79 ± 20.17 ㎚, pre-treatment, post-treatment of Moutan Cortex Radicis microcapsule hair showed very low roughness as 138.14 ± 14.65 ㎚, 130.71 ± 22.93 ㎚. In case of Moutan Cortex Radicis microcapsule hair treatment group, its roughness reduction rate was represented to be further low than that of general hair treatment group, its effect of protecting cuticle damage was confirmed to be high.
As a result of analyzing component of hair by using EDS, while content of S in untreated hair was 11.39 Wt%, that of UV radiated control group after general permanent wave treatment was represented as 7.65 Wt% showing significant reduction.
On the other hand, S contents of pre-treatment group and post-treatment group of Moutan Cortex Radicis microcapsule hair showed 9.50 Wt% and 10.19 Wt%, respectively and this result was higher than that of control group. Content of carbon also showed a tendency of being increased compared with control group and content of oxygen showed high reduction rate than that of control group.
Nitrogen also showed a tendency of being decreased compared with control group. Contents of other trace elements did not show high variation tendency as it differs depending on nutrition condition and living environment.
As a result of analyzing composition of amino acid, amino acid of UV radiated control group after general permanent wave treatment was measured as 95.52% which was lower than untreated hair of 95.94% and glutamic acid showed sudden increase and cysteine was decreased. Methionine containing S was also decreased and arginine involved in salt bond also showed significant reduction rate. On the other hand, total amino acid composition in pre-treatment, post-treatment group of Moutan Cortex Radicis microcapsule hair was higher than that of control group as 95.85% and 95.79%, respectively and it was also higher than that of general hair pre-treatment, post-treatment group and glutamic acid was decreased than control group and general hair pre/post treatment group and its pre/post treatment cysteine was higher than that of control group and general pre/post treatment as 12.5% and 12.9%, respectively.
As a result of measuring oxidation reaction of hair by using FTIR, absorption rate of cysteic acid that is an indicator of hair damage was the highest in control group as 16.59% and in pre/post treatment of Moutan Cortex Radicis microcapsule hair, absorption rate of cysteic acid (S=O) shown a result of being decreased as 12.55% and 13.13%. In particular, at the time of pre-treatment, not only absorption rate of cysteic acid but also that of cystine monoxide (SO) that is pre-stage of cysteic acid production was represented to be the lowest as 7.42%. In case of cystine dioxide (SO2), control group showed 16.16% and for pre/post-treatment of Moutan Cortex Radicis microcapsule hair, its absorption rate showed 9.55% and 8.95%, respectively which were lower than that of control group.
In view of above result, Moutan Cortex Radicis extract was confirmed to have a potential of being able to be applied to raw material of natural cosmetics having an anti-inflammatory, antibacterial, non-toxic effect and through this, it was revealed that an effect of mitigating hair damage was also outstanding when natural hair treatment was manufactured and used by employing Moutan Cortex Radicis extract. In particular, during pre-treatment of Moutan Cortex Radicis microcapsule hair, a result that hair damage was decreased in spite of its rinsing was represented and during post-treatment, an effect of protecting hair from UV radiation was confirmed to be very high.
Under this background, it is expected that the result of this study would be very useful for presenting a new method through which hair damage being occurred during chemical treatment in actual beauty industry would be prevented and healthy hair maintained after chemical treatment.