✅ Redness after injection: it could be healed by itself around 3~5 workdays
a. Because the human body is repulsive and it rejects adventive objects.
b. Everyone has different allergens and allergies.
c. Different absorption period.
✅ Lumpy redness
a. Wrong methods for injecting(superficial, middle and deep).
b. Too many hits on the same part.
c. External environment: condition of sterile and sanitary.
d. Incomplete disinfection of the face.
e. Strong force causes the needle to bend and bleed.
✅ Purpura: touching blood vessels.
✅ There are lumps, long-term non-absorption, which could be dissolved by hyaluronidase.
✅ It is not possible to inject multiple sites at one time. After the swelling has subsided, you can inject it in another place.