CA stands for chloroacetic acid. Chloroacetic acid has the same mechanism of action as TCA, but with minimized discomfort and downtime, allowing the stellar results of a TCA peel with a better tolerance and safety profile. 8% chloroacetic acid is blended with 2% salicylic acid to provide even absorption, uniform frosting, and improve appearance of photodamage, dark spots, wrinkles, and rough skin texture.