These colors are easily removable with water and soap, however, as compared to permanent pigments applied in tattoos or makeup. The pH of the skin, which is slightly acidic, influences the colors ...

Cells get nutrients from their environment, but where do those nutrients come from? Virtually all organic material on Earth has been produced by cells that convert energy from the Sun into energy ...

Melasma is a common skin condition that causes patches of darker skin to form, often on the face. It tends to occur in areas with more sun exposure. Melasma is not harmful, but it may affect how a ...

Hormones influence skin aging far more than previously thought, impacting wrinkles, pigment loss, and overall skin health. Researchers have identified key players, including melatonin and insulin-like ...

Blood Pigments Hemoglobin is red, hemocyanin is blue, chlorocruorin is both red and green. All are studied together because they perform the same function in rather dissimilar organisms ...

In some cases, it may develop in other areas of the body. Trauma and treatment for varicose or spider veins can also induce pigment changes caused by a buildup of iron beneath the skin. If you notice ...