Summer WashStop shampoo. Summer Wash is specifically designed with summer in mind. Your hair and scalp react to the seasons. Your hair wash should, too. Why did we make this? We made this because there is no gentle cleanser appropriate for use in warmer weather. Over 13 years cutting hair, our barbers have most often mentioned straw like, stripped hair as the number one client hair concern. Dry hair and loss of your natural oils visibly impacts hair and scalp