Here's an article I found comparing treatment methods.
Bottom line was time was the only thing that made a difference.
[from
http://www.aemj.org/cgi/content/abstract/13/5_suppl_1/S46-a]
A Randomized, Controlled Trial Comparing Different Treatment Regimens Following Oleoresin Capsaicin (Pepper Spray) Exposure
Robert Hennessy, J. Dave Barry, John Ward and John G. McManus
San Antonio Uniformed Services Health Education Consortium, San Antonio, TX
ABSTRACT
Objective: Oleoresin capsicum (OC), an inflammatory agent, is a derivative of hot cayenne peppers used as a defensive and incapacitating agent. Exposure to OC results in irritation and inflammation of the mucous membranes. The purpose of this study was to compare various topical agents for decreasing pain related to OC exposure.
Methods: We performed a single-blind, randomized human experiment evaluating the effectiveness of 5 different regimens for the treatment of topical facial OC exposure in volunteer adult law-enforcement trainees. Forty-nine adults consented for the study and were exposed to OC during a routine training exercise. Following exposure to OC, subjects underwent a 2-minute training exercise and then were allowed to self-decontaminate with tap water. After decontamination, subjects rated their pain using a 10-cm visual analog scale (VAS). The subjects were then randomized into one of 5 different treatment cloths soaked with one of 4 different substances (Maalox, 2% lidocaine gel, baby shampoo, and milk) or 1 control group (water). Subjects were observed for 60 minutes and allowed to use as many towels as desired. Subjects' pain was documented every 10 minutes using the VAS. Subjects were blinded to previous VAS recordings and treatment regimens. A 1.3-cm improvement was considered clinically significant.
Results: 45 men and 4 women with an average age of 24 were enrolled in the study. Two-factor analysis of variance (ANOVA) (treatment, time) with repeated measures on one factor (time) was performed. There was a significant difference in pain with respect to time (p < 0.001), but no significant interaction between time and treatment (p > 0.05). There was no significant difference in pain between treatment groups (p > 0.05).
Conclusions: In this study there was no significant difference in pain between different treatment groups for pain relief secondary to facial OC exposure. Time after exposure appeared to be the best predictor for decrease in pain.