• Checks if needle is in a blood vessel
• Helps prevent vascular occlusion
• Improves safety
• Blockage of a blood vessel
• Can reduce blood supply to tissue
• Medical emergency
• Immediate pain
• Skin blanching (white/pale)
• Cool skin
• Mottled or patchy appearance
• Stop injecting immediately
• Massage the area
• Apply warm compress
• Seek urgent medical help
• Better control
• Reduces risk of complications
• Allows even distribution
• Prevents overfilling
• Improves precision
• Safer for patient
• Guides placement
• Improves symmetry
• Avoids important structures
• Helps assess natural contours
• Improves accuracy
• Reduces risk of uneven results
• Minimise risks
• Achieve natural results
• Maintain patient safety
• Helps visibility
• Improves precision
• Reduces risk of mistakes