A system for skin treatment including first, second, third, fourth, and fifth formulations that each include glycolic acid in an amount that ranges between 6 to 13 wt %, and salicylic acid in an amount that ranges between 1.3 to 2 wt %, wherein each of the first, second, third, fourth, and fifth formulations are free of ethanolamine, paraben, propylene glycol, and sulfate.
