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Yes, certain chemicals can, indeed, induce or worsen vitiligo. Most commonly they include phenols, such as 4-tertiary-butyl phenol (4-TBP, found in adhesives) or 4-tertiary-butyl catechol (4-TBC, found in rubber and other products). 

There are a number of commercial products that have been reported to induce vitiligo, and most of them contain phenols. A study was performed by a group in India to identify products that cause vitiligo, and below is a list of suspicious products that they identified, which includes permanent hair dyes, some detergents, and other ornamental dyes sometimes used on the skin. The problem is, exactly which products do this, and what chemicals are directly responsible, is not yet clear, and it is impossible to avoid all suspicious products. Also, it is unlikely that every chemical has this effect on every patient with vitiligo, so some products may be harmful for some patients but not others.

Rubber gloves

Lubricating and motor oils

Detergents

Printing inks

Hair dye

Deodorant/perfume

Detergent/cleanser

Adhesive ��bindi��

Rubber sandal

Black socks/shoes

Eyeliner 

Lip liner 

Rubber condom 

Lipstick 

Fur toys

Toothpaste

Insecticide 

Alta (decorative color on feet) 

Amulet string. 

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