I just wanted to share this website I found, “The Human Touch of Chemistry”. It is fantastic for small quirky facts about everyday chemistry such as how superglue works, why turmeric turns red, why pumice stones float in water, etc.
Like, did you ever wonder what makes cold creams cold? Well, they contain a highly volatile ingredient known as…alcohol. Yes, and it is the alcohol that leaves you with the cooling effect when it evaporates. As the website says, “Evaporation is an endothermic process that requires heat. The warmth of your skin is enough for the cream to start to evaporate….When applied to skin the alcohol in the cream being highly volatile uses the heat of the body to evaporate and thus gives you a cooling effect.”