Dictionary.com
Thesaurus.com

phototoxic

British  
/ ˌfəʊtəʊˈtɒksɪk /

adjective

  1. (of cosmetics, skin creams, etc) making the skin hazardously sensitive to sunlight

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The first is a phototoxic reaction, often seen with certain antibiotics such as tetracycline.

From New York Times

The pathology would help him distinguish the inflammation of hives from the more destructive phototoxic reaction, which destroys the skin cells.

From New York Times

The plant's sap contains a chemical called furocoumarins, and when it mixes with sunlight, it causes a phototoxic reaction on skin called phytophotodermatitis.

From National Geographic

“Those can definitely be phototoxic, especially the retinoids,” says Rech.

From Time

“Phototoxic effects are going to appear like a really bad sunburn.”

From Time