FDA researchers report that multiple active ingredients wind up in users’ bloodstream and recommend toxicology testing to investigate the clinical significance of the findings.

The cephalopods use several strategies to manipulate light and produce their colorful patterns.

A microneedle-containing skin patch offers researchers a noninvasive way to survey immune responses in mice.

A stick-on patch enables sampling of immune cells in the skin.

High salt concentrations are present in the affected skin of people with atopic dermatitis and promote the differentiation of the T helper cells involved in the development of allergic diseases.

Researchers used infrared light to relieve itchy mice.

The head of the National Institute of Arthritis and Musculoskeletal and Skin Diseases was a leader in the study of skin-based immunology.

Fish scales follow a model famed computer scientist Alan Turing developed to describe patterns observed in other animals’ feathers, spines, and scales.

Micrometer-scale fractures in elephant skin results from the way the epidermis grows.