Kitty litter that is made from clay or bentonite is slightly radioactive. GK Hart/Vikki Hart, Getty Images Cat litter is sufficiently radioactive that it can set off radiation alerts at international border checkpoints. Actually, it's not all cat litter you need to worry about -- only the stuff made from clay or bentonite.
Deep folliculitis is usually more severe. Follicles are densest on your scalp, and they occur everywhere on your body except your palms, soles, lips and mucous membranes. Damaged follicles are at risk of infection. The most common causes of follicle damage are: Friction from shaving or tight clothing.
Many people mistake scalp acne for another skin condition known as scalp folliculitis. Scalp folliculitis is a more severe condition, although it also is caused when bacteria grow inside a hair follicle. If you're not sure if the red bumps on your scalp are acne or folliculitis, you may want to consult a doctor.