Many people are content with the product, according to the Does It Really Work team. Grecian Formula advertises restoration of an individual's natural hair color in place of aged grey and white hair. The company that makes Grecian Formula claims that a person's hair changes gradually after multiple applications.
The product is believed to be one of the best-known hair-coloring products. However, the effectiveness of the non-lead acetate-based Grecian Formula is disputed, according to Gray Hair Specialist. As of 2012, the Grecian Formula products, having replaced lead acetate with silver or copper acetates, are seen as less effective.
Grecian Formula has been sold for decades. It has been available since 1961 and is sold in 30 countries worldwide, as of 2015. In the U.S., it works by using lead acetate, darkening with exposure to air and allowing gradual coloring of hair. However, in other areas of the world, different non-lead acetate formulas are used instead due to concerns over toxicity of lead acetate.