Glycerin is perhaps the best natural humectant (moisturizing substance). It absorbs an amazing 50 percent of its weight in moisture from the air. This makes it an excellent aftershave — just a rub a little on your skin for the moisturizing effect.
Glycerin is created when a vegetable oil like olive oil is mixed with an alakli. The result is a thick, sweet, fatty liquid.
Glycerin is available from health stores and Amazon.