The crossword solution for the term 'Soothing Ingredient' is Aloe, which is a four-letter word. Aloe is a succulent plant that is native to Africa and is widely used in many skin care products due to its healing and soothing properties. It is also known for its anti-inflammatory and antibacterial properties, making it an ideal ingredient for treating skin conditions such as sunburns, eczema, and psoriasis.