The pigment melanin is found in all living kingdoms and in many different structures and
forms. When its various functions are examined separately, its behaviors seem disparate …

Chronic photodamage of the skin manifests itself as extrinsic skin ageing (photoageing) and
photocarcinogenesis. DNA photodamage and UV‐generated reactive oxygen species are …

Quinoid precursors of melanin and/or reactive oxygen species (ROS) generated during
melanogenesis have been implicated as cytotoxic molecules in the immune responses of …

Atomic force microscopy is used to investigate the structural organization of eumelanin
isolated from the inks sacs of the cuttlefish Sepia officinalis. Deposits of eumelanin on mica …

Photoaging and skin cancer can result from the exposure of skin to ultraviolet A (UV-A, 320−
400 nm) radiation. The detailed chemical mechanisms by which these processes occur are …

The binding of Mg (II), Ca (II), Zn (II), Cu (II) and Fe (III) to ETDA‐washed Sepia melanin is
quantified by inductively coupled plasma mass spectrometry. By monitoring the solution pH …

Photoacoustic calorimetry is used to examine the energy dissipation in melanin under
physiological conditions (pH 7.2) following irradiation by UV and visible (VIS) light. Four …

The plasma soluble melanins (PSM) form spontaneously in vitro and in vivo and their
formation involves oxidative polymerization and copolymerization of dopa, catecholamines …

Hair graying, also known as canities or achromotrichia, is a natural phenomenon associated
with aging and is influenced by external factors such as stress, environmental toxicants, and …

Melanins are ubiquitous catecholic pigments, formed in organelles called melanosomes
within melanocytes, the function of which is to protect skin against harmful effects of UV …