The number of passes for the vacuum device is between what values?

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Passes describe how many times you glide the vacuum device over a treatment area in one session. The recommended range is three to five passes. This amount provides enough suction and movement to stimulate lymphatic drainage, boost circulation, and support collagen remodeling without over-stimulating or injuring the skin. Doing fewer than three may be ineffective, while more than five increases the risk of irritation or bruising, especially on sensitive areas. The other options don’t fit because they refer to area dimensions, a color-adding concept, or an anatomy term unrelated to how many times you move the device.