Several readers recommended crystal rock sticks last week, but another reader this week suggests they may not be all they seem. They claim to have no aluminium chlorhydrate, but the small print often reveals that they do contain other aluminium salts such as ammonium alum. Weleda produce effective deodorants, made from essential oils in an alcohol base, suggests our reader. Another option is antibacterial hand lotion, which helps prevent the formation of bacteria while allowing you to sweat as nature intended.