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相关概念视频

Role of Skin in Vitamin D Synthesis01:23

Role of Skin in Vitamin D Synthesis

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The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
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Pigmentation01:19

Pigmentation

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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
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Gain of Protection Afforded by the Methoxypropylamino Cyclohexenylidene Ethoxyethylcyanoacetate (MCE) UVA1 Filter on Pigmentary and Aging Signs: An Outdoor 4-Week Randomized, Intra-Individual Comparative Study in 52 Brazilian Women.

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Overview of proficiency testing results for the in vivo determination of sun protection factor.

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相关实验视频

Updated: Jul 16, 2025

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
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Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model

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新的配方技术可以提高防晒保护.

Hélène Meaudre1, Odile Aubrun1, Jean-Baptiste Boitte1

  • 1L'Oréal R&I, Chevilly-Larue, France.

International journal of cosmetic science
|September 17, 2023
PubMed
概括

一种新型聚合物,简称AAHCP,增强了防晒的有效性和化品的感觉. 这种乳液技术的创新为防晒产品提供了卓越的光保护和可取的感官属性.

关键词:
紫外线过器的紫外线过器化学分析 化学分析配方 护肤/稳定性/纹理/乳液照相保护 照相保护聚合物/表面活性剂 聚合物/表面活性剂

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The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight
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Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues
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Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues

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相关实验视频

Last Updated: Jul 16, 2025

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The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight
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Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues
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Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues

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科学领域:

  • 化品科学 化品科学
  • 材料科学 材料科学 材料科学
  • 皮肤病学 皮肤病学

背景情况:

  • 光保护是所有皮肤类型的全球关注.
  • 消费者要求防晒产品既美观优雅又高效.
  • 开发先进的防晒配方对于满足这些消费者偏好至关重要.

研究的目的:

  • 开发一种高性能和可取的防晒产品.
  • 研究一种新型聚合物,简称AAHCP,在防晒配方中的特性和应用.
  • 创建一个创新的防晒配方技术,提供卓越的光保护.

主要方法:

  • 利用扫描电子冷显微镜 (cryoSEM),小和广角X射线散射,并对焦激光扫描显微镜来分析AAHCP行为.
  • 开发并测试了包含AAHCP的创新防晒配方.
  • 使用体外和体外方法评估光保护功效,包括太阳保护因子 (SPF) 测量.

主要成果:

  • 该AAHCP聚合物表现出有效的油结构和简单乳液中小而稳定的液滴的形成.
  • 在体外和体外的SPF测量证实了AAHCP的日光保护增强效果.
  • 配方表现出最佳的性能与理想的化品特征,包括非粘性,非油性感觉和不可见的皮肤外观.

结论:

  • 开发了一种使用特定聚合物 (AAHCP) 的新乳液技术.
  • 这项创新成功地将最大的SPF有效性,对各种压力的耐受性和最佳的感觉性与一个单一的防晒产品相结合.
  • 这代表了防晒领域的重大进步.