Colophonium (rosin, CAS no. 8050-09-7) is a complex mixture of >100 different compounds derived from pine trees. It is a good tackifier, can be used as an emulsifier, and has acid properties without causing corrosion. Because of these properties, colophonium is used in various products, such as soldering fluxes, paper, cosmetics (depilatory waxes, soaps, hair gel, and nail polish), cutting flui...

What causes it? The most common causes of dysuria are infections, such as bladder infections or urinary tract infections (UTIs). In women, vaginal infections are a common cause. In men, prostate infections can cause it. In both men and women, sexually transmitted infections can cause it. Sometimes using soaps, spermicides, or lotions can cause irritation and pain. Some skin problems can cause d...