"How painful is the 700 compared to the 100? Is it suitable for sensitive skin?"
回复方显得2026-03-13 19:36:28
"For sensitive skin, it's best to start with Step 100 to let your skin adjust. If your skin is currently very irritated, please hold off. For slight sensitivity, always test behind your ear first. Important: Avoid using it with acids or high-strength Vitamin C!"