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Gematria Test Lab

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Gematria Test Lab是一家专业的家用、工业和化妆品行业的服务提供商。专门从事自由基的研究。Gematria 服务项目包括抗氧化力、抗自由基电位法、包裹率、自由基防护因子、自由基日光/皮肤防护因子、皮肤抗氧化防护和传输系统稳定性的测试。
AP - Antioxidative Power GEMATRIA TEST LAB 化妆品配方的抗氧化能力(AP),可通过选用原料来决定清除自由基并打破自由基的连锁反应的能力和速率。
ARP - Antiradical Potential Method GEMATRIA TEST LAB ARP方法可量化直接接触皮肤的局部配方清除的自由基。
CORA - Coating Rate GEMATRIA TEST LAB CORA是光催化活性的比较方法,单独催化和涂敷在照片上催化的比较。
RHF - Radical Hair Protection Factor GEMATRIA TEST LAB RHF代表着两者都应用相同剂量的紫外光时,未受保护的头发产生的自由基数目Nu和头发受保护时产生的自由基数目Np的比率。
RSF /Radical Sun / Skin Protection Factor GEMATRIA TEST LAB RSF代表着两者都应用相同剂量的紫外光时,未受保护的皮肤产生的自由基数目Nu和皮肤受保护时产生的自由基数目Np的比率。
SAP (Skin Antioxidative Protection) GEMATRIA TEST LAB 该SAP方法是确定皮肤内的化妆品或药物抗氧化的功效。
Stability of Carrier Systems GEMATRIA TEST LAB 确保纳米粒子在粘性以及不透明体系里的长期稳定性,为各体系寻找到最合适的配方。
Penetration of Reactive Substances in the Skin Characterized by its Radical Status Factor (RSF) GEMATRIA TEST LAB 皮肤的外部护理,如化妆品、紫外线吸收剂、抗氧化剂的局部应用,由纺织品保护,或腐蚀性清洁剂的使用会影响皮肤的自由基状态,并且可以通过自由基皮肤状态因子(RSF)来表征。这个因子能够表明未处理皮肤(RS untr)和处理皮肤(RS TR)的自由基状况之间的关系:RSF= RS TR/ RS untr。 物质或因素导致自由基减少则RSF>​​1,自由基增加则RSF < 1。没有影响则相应RSF=1。因此RSF不仅表明防晒剂的紫外线和自由基保护,它也是用于表征各种外源性和内源性因素影响的整个自由基状态的通...展开 皮肤的外部护理,如化妆品、紫外线吸收剂、抗氧化剂的局部应用,由纺织品保护,或腐蚀性清洁剂的使用会影响皮肤的自由基状态,并且可以通过自由基皮肤状态因子(RSF)来表征。这个因子能够表明未处理皮肤(RS untr)和处理皮肤(RS TR)的自由基状况之间的关系:RSF= RS TR/ RS untr。 物质或因素导致自由基减少则RSF>​​1,自由基增加则RSF < 1。没有影响则相应RSF=1。因此RSF不仅表明防晒剂的紫外线和自由基保护,它也是用于表征各种外源性和内源性因素影响的整个自由基状态的通用因子。 收起
The Influence of the Cosmetic Formulation on the Radical Status of Skin GEMATRIA TEST LAB All skin treatments that influence the hydration degree of the skin and/or its barrier function may have a measurable influence on the radical generation. The highest effect was measured, when a solution of glycerine and water (50:50, w/w) was applied on ...展开 All skin treatments that influence the hydration degree of the skin and/or its barrier function may have a measurable influence on the radical generation. The highest effect was measured, when a solution of glycerine and water (50:50, w/w) was applied on the skin. The amount of free radicals compared to untreated skin was nearly doubled. Thus, there are no placebos, from a dermatological viewpoint. Beyond the extinction characteristics of UV filters, their distribution inside a cosmetic formulation as well as their distribution pattern on the skin’s surface are the most important parameters that drive the efficacy of sunscreens. The more homogeneous is the film of UV filters on the skin, the higher will be the protective effect. The three model formulations, each exemplary for common sunscreen sprays, lotions, and creams, have very different performance on the skin. 收起
The Multifactorial Influences on the Radical Status of Skin GEMATRIA TEST LAB 由于在生物系统中的自由基反应是导致皮肤过早老化和严重病症的最重要因素之一,许多措施也一直试图阻止自由基引起的损伤。自由基反应普遍存在于生物系统 ,所有活的生物体中的多重防御体系确实证明了这些反应的进化重要性。
The Radical Skin Factor (RSF) Distinguishes Between Cosmetic Formulations Acting as Radical Protector or Booster GEMATRIA TEST LAB The free radical status of the skin can be detected by spin probe assisted ESR spectroscopy which enables the quantification of radical processes in the skin. These measurements are the basis for the evaluation of cosmetical and pharmacological skin care ...展开 The free radical status of the skin can be detected by spin probe assisted ESR spectroscopy which enables the quantification of radical processes in the skin. These measurements are the basis for the evaluation of cosmetical and pharmacological skin care products, as antioxidant creams as well as surface active agents with a radical boosting effect like detergents/surfactants or selftanners up to further external and internal applied substances influencing the radical process in skin. 收起
The Role of Melanin as Protector Against Free Radicals in Skin and its Role as Free Radical Indicator in Hair GEMATRIA TEST LAB 身体中黑色素是一种含有内在的、半醌类自由基群体的同质生物聚合物。其它外源性自由基是由UV和可见光引起的,而且可逆。黑色素光化学,特别是外源性自由基的形成和衰变,一直是众多电子自旋共振仪(ESR)研究的课题。一些黑色素单体存在,以及黑色素聚合物中的主要单体依赖于它在生物体内的位置。在皮肤和头发上,黑色素中真黑素和褐黑素的含量会有不同。黑色素的生物激进特征和对UV照射的敏感性,使它成为皮肤和头发紫外线相关处理的优异指示剂。