Dapper Dan Hair Tonic Green 100ml - Travel Size Today it has almost fallen into oblivion. But in the 1920-50s, hair tonics had the value of an after shaves. In the bathroom there was a hair tonic to revive the head early in the morning before shaving and prepare the hair for the obligatory pomade. In the barber shops, a hair tonic massage forms the crowning end of the haircut. And in summer, menthol and eucalyptus enriched hair tonics, such as Osage Rub, Dapper Dan Hair Tonic Green or Dapper Dan Hair Tonic Blue, were cooling relief for the head and even pain relief from mosquito bites.