Where should a diamond tip be changed?

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The main idea here is that the diamond tip is a consumable component that wears or becomes contaminated with use, so it needs to be changed to maintain safe, effective treatment. Changing the tip when you reach the nose area helps ensure hygiene and consistent exfoliation in that zone. The nose often presents a unique contour and higher oiliness, so using a fresh tip there minimizes drag, reduces the risk of transferring residues to other areas, and helps achieve reliable results. After inspecting the tip for wear or buildup, switch it as part of your standard sanitation and technique routine.