Shaving aid is a term used to describe products that help make shaving easier and more comfortable. The two crossword solutions for the term are 'LATHER' (6 letters) and 'FOAM' (4 letters). LATHER is a soapy substance created by mixing soap or detergent with water and air, which is used to help soften and moisten the skin before shaving. FOAM is a light, airy substance created by adding air or gas to a liquid, which is often used in shaving creams and gels to help lubricate the skin and provide a protective barrier between the razor and the skin.