1919 Woodbury's Facial Soap as a Shampoo & Specific Washing Instructions Ad #2393

This original 11 x 14" magazine ad was published in 1919 and gives very detailed steps on how to properly wash your hair with Woodbury's Facial soap, including applying it to the scalp with a toothbrush! I don't know who would have the time to do that on a regular basis if you read through each of the steps required.