### Question
How does the law define strong sensitizer?


### Answer
Under *15 U.S.C. § 1261*, **strong sensitizer** is defined as:

> a substance which will cause on normal living tissue through an allergic or photodynamic process a hypersensitivity which becomes evident on reapplication of the same substance and which is designated as such by the Commission

#### Citation:
  - *15 U.S.C. § 1261*
  - Heading: **CHAPTER 30-HAZARDOUS SUBSTANCES**

