Fats and oils are needed for your brain and nervous system, for energy production and for making most of the body s vital hormones. Children, in particular, absolutely require adequate fats and oils, particularly EPA and DHA. These are two omega-3 essential fatty acids needed for development of the nervous system.
Styling gel, smoothing serums, hair spray and other hair products can cause acne on your forehead if they have a chance to accumulate there, says Susan Binder, a New York City-based dermatologist in Glamour magazine's daily beauty blog. If you have bangs, your forehead may be even more acne-prone.
The simplest and the most common cause of forehead lumps is simply a reaction to the fact that you have hit your forehead on the hard surface at some point. When this happens, a lump may form and be quite painful to the touch. This is not a cause for concern, and the lump should go away on its own in a few days.