Scientists have discovered a hidden fibrous sheath beneath the belly button that explains why navels stay concave for life.

Glycolic acid is a substance that chemically exfoliates a person’s skin by dissolving dead skin cells and oils. Glycolic acid may also help boost collagen production, and support skin moisture.

The skin can absorb nicotine from cigarettes. This may cause adverse effects such as premature skin aging, delayed wound healing, and increased infections. It may also lead to skin diseases like ...

Researchers have analyzed the antibody Immunoglobulin M in rainbow trout to shed some light on why these proteins may have evolved over time. Antibodies -- proteins that are produced by our immune ...