Based on the search results, there is only one relevant result that provides information about shaving and its ingredients.

Shaving cream contains many petroleum-based chemicals that are necessary for lubricating the skin. Lubrication is necessary because the propellant expelling the shaving cream dries out the skin. However, oil repels water, and water is essential for a smooth shave instead of the “yank and hack” method. Warm water draws out and softens hair. This allows the safety razor to cut the hair instead of the multi-blade razor yanking the hair forward and hacking it like a machete hacking an overgrown lawn. One of the most common ingredients found in many cosmetics and personal care products, including shaving cream, foams, and soaps, is Propylene glycol. It is what is used in brake fluid and antifreeze. Although the risk for health issues is low, individuals with sensitive skin may respond negatively to a shaving cream that contains this chemical.

In summary, shaving cream contains petroleum-based chemicals that are necessary for lubricating the skin, and one of the most common ingredients found in many cosmetics and personal care products, including shaving cream, is Propylene glycol. Individuals with sensitive skin may respond negatively to a shaving cream that contains this chemical.