The light suction created when you squeeze and release the cup lifts the skin and underlying soft tissue slightly, changing how pressure is distributed during the gliding motion. This mechanical stimulation increases local blood flow and can help loosen areas that feel tight from inactivity or exercise. After a proper session, it's normal to see mild, temporary redness in the pattern of your strokes — this should fade within 15 to 60 minutes. Your skin may feel warm, tingling, or more 'awake.' The area might also feel temporarily firmer or more toned to the touch. You should stop immediately if you experience marked irritation (like deep red streaks, itching, or burning that persists), sharp pain, or if any bruising appears. The tool is designed for gentle use; if the sensation is intense or uncomfortable, you're likely using too much pressure or holding the suction too long.
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