The phrase "acid treatment" refers to a process where acid is used to clean or remove substances from something, usually in scientific or industrial settings. Full definition
They discuss the data on other options, like control of diet, limited intake of sugar, and vitamin and amino acid treatments. (psychpage.com)
It's a unique acid treatment that doesn't strip of skin moisture but leaves skin brighter and smoother, and ready for makeup application. (sokoglam.com)
I actually tried this lactic acid treatment in this kit which was amazing because I also love the Luna Night Oil. (wearflowersinyourhair.com)