Face and Neck Pigmentary Alterations in Hair Dye Users: A Cross-sectional Study from South India.

Background: Hair dyes are commonly used for the concealment of grey hair in India. The pigmentary alterations produced by hair dyes on the face and neck have not received sufficient attention.

Aims: To study the pigmentary alterations on the face and neck in hair dye users, and identify possible risk factors associated with the face and neck hyperpigmentation.

For the love of color: Plant colors and the dermatologist.

Humans have been anointing their skin with natural colorants since antiquity. Before the advent of modern cosmetics, tattoos and hair dyes, the spectacular colors in plants served as a palette for humanity's fascination with color. Skin, hair, nails, teeth and clothing have been altered with botanical colorants for centuries.

Occult dysraphism presenting with acro-osteolysis.

The skin and the nervous system share common embryologic origins. Cutaneous stigmata may be early clues to underlying occult spinal dysraphism. The delayed manifestations of spinal dysraphism may also involve the skin.