mars by GHC is a mid-size hair treatments, oils & protector brand that markets products and services at ghc.health. mars by GHC competes with other top hair treatments, oils & protector brands such as JVN Hair, Dae Hair and Silkee Smoothe Hair. mars by GHC sells mid-range purchase size items on its own website and partner sites in the competitive online hair treatments, oils & protectors industry.