Antioxidant and hair growth effects of fullerene / Masayuki Ito in PERSONAL CARE EUROPE, Vol. 11, N° 1 (02/2017)  

[article]  inPERSONAL CARE EUROPE > Vol. 11, N° 1 (02/2017) . - p. 37-40 Titre : Antioxidant and hair growth effects of fullerene Type de document : texte imprimé Auteurs : Masayuki Ito, Auteur Année de publication : 2017 Article en page(s) : p. 37-40 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants Cheveux -- Croissance Cheveux -- Soins et hygiène Cosmétiques Fullerènes Index. décimale : 668.5 Parfums et cosmétiques Résumé : Fullerene is a molecule with a soccer ball-like structure consisting of 60 carbon atours, and is said to be the third carbon allotrope (after graphite and diamond) (Fig 1). Owing to its unique structure, it is chemically characterised by strong antioxidation and is anticipated to have various applications.' It is already being sold as a cosmetic raw material because of its antioxidant properties. Several clinical studies have reported its efficacy in reducing spots, wrinkles, and acne, which are thought to be associated with oxidative stress. Although it has been reported that oxidative stress is involved in alopecia areata, the link between hair growth and oxidative stress has not been found ; moreover the effects of substances with antioxidant properties, such as fullerene, are also unknown. Therefore, we conducted a single-blind clinical trial to determine how application of a tonic containing fullerene to human male scalps influences hair growth. Note de contenu : - FULLERENE AS COSMETIC RAW MATERIAL : Discovery of fullerene - Antioxidative effect of fullerene - Application of fullerene to cosmetics - Measures taken against reactive oxygen species to enhance beauty using fullerene - Safety of fullerene - EFFECT OF FULLERENE ON HAIR GROWTH : Method of experiment - Results and discussion - FIGURES : 1. Fullerene C - 2. Harmful effect of reactive oxygen species on the skin - 3. Measurement of hair-growth speed. Image just after hair shaving and image of the same portion on Day 3. The length of each hair was measured - 4. Measurement of hair density. The number of hair strands within the marked circumference divided by the area of the circle - 5. Change in hair-growth speed.Hair growth was expressed by the relative amount to the control and significant differences were compared with the control group - 6. Results of hair density, hair diameter, and anagen hair ratio En ligne : https://drive.google.com/file/d/1gq66xPQT7o4WO4nrBYHYVJ6uSzlQFVhF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27900 [article]

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Fullerene protects against ROS in hair / Masayuki Ito in PERSONAL CARE EUROPE, Vol. 12, N° 5 (11/2018)  

[article]  inPERSONAL CARE EUROPE > Vol. 12, N° 5 (11/2018) . - p. 96-98 Titre : Fullerene protects against ROS in hair Type de document : texte imprimé Auteurs : Masayuki Ito, Auteur Année de publication : 2018 Article en page(s) : p. 96-98 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.5 Parfums et cosmétiques Résumé : Hair, as with skin, ages over time. As time progresses, one's hair whitens, thins, waves, and reduces in lustre. In addition to the natural mechanisms of ageing, hair also ages as a result of damage caused by reactive oxygen species (ROS) due to repeated exposure to ultraviolet light or metallicions and chlorine present in tap water. Furthermore, artificial treatments such as hair perming, colouring, and drying can cause further accumulation of damage to human hair. While an essential component of perming and colouring, hydrogen peroxide still remains in the hair after extensive washing and can then react with metal ions to produce ROS – for this reason, chelating agents such as EDTA have been used. The effects of ROS on skin have been studied extensively, and as a result, raw ingredients meant to protect against ROS are readily available for retail sale. ROS can also damage hair, for example, through the well-understood mechanism of cystine disulfide bond breakage. Upon exposure to ROS, cystine disulfide bonds become irreversibly sulphonated, producing cysteic acids and precluding further cystine bonding. The abundance of cystine bonds has been suggested to be well correlated with the degree of hair strength, and as such, the destruction of these bonds have been thought to reduce hair strength. In addition, ROS are thought to denature proteins in hair and fade hair colouring. Unlike skin, hair is not composed of live cells and lacks endogenous self-repair mechanisms, and thus, the prevention of damage from ROS is of utmost importance. Note de contenu : - What is the most suitable anti-oxidant for ROS-induced hair damage - Fullerene as an ingredient for hair care - Penetration in hair - Protection of hair from UV irradiation - Hair lustre restoration and improvement experiments - Suppression of hair colour fading - Suppression of cysteic acid production En ligne : https://drive.google.com/file/d/1ONklT8iRyHO6X7qs_T7fEEbepH48dJ37/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31291 [article]

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