Itching powder refers to a group of powders or powder-like substances that induce itching when applied onto human skin. This is usually done as a practical joke or prank to an unsuspecting victim.
The cause of the irritation can be mechanical, such as products containing ground rose hips.  In other cases, the irritant causes contact dermatitis. For instance, a proteolytic enzyme in okra can cause irritation and lesions.  Another common ingredient is Mucuna pruriens.
- ^ Albert MR. Novelty shop "itching powder." Australasian J Dermatology. 1998 Aug;39(3):188-9.
- ^ Fumi Manda, Kenjiro Tadera, Kohji Aoyana (1992). Skin lesions due to okra (Hibiscus esculentus L): proteolytic activity and allergenicity of okra. Contact Dermatitis 26 (2), 95–100.
- ^ G. V. Joglekar, M. B. Bhide J. H. Balwani. An experimental method for screening antipruritic agents. British Journal of Dermatology. Volume 75 Issue 3 Page 117 - March 1963