So how does infection arise as a result of dermal filler procedure?

Often an overlooked entity, bacterial infection from a procedure can be introduced if the patient is already immunocompromised with a cold, flu, tonsilitis or other such localised infection. If a client is feeling unwell due to any of these reasons, the best and safest way to avoid any further introduction of bacterial infection would be to rebook and treat once the illness has resolved. More obviously and commonly, poor sanitation of the patient’s skin before the injection is conducted can cause a bacterial infection also. Residual make up for example and fake tan are major contributors to this typically known as the waste surface. On top of the waste surface, you have gram-positive species such as staphylococcus epidermidis, Corynebacterium species, staphylococcus aureus and streptococcus pyogenes.

https://nih.gov/books/NBK333408/

Other high-risk areas are procedures that are close to the oral commissures, wet dry boarders and mucosa, facial hair and the hairline in women. They will give rise to very demarcated areas of infection, raise bumps, itchiness and inflammation. Bacteria accumulate in both hard and soft tissue of the mouth in biofilms, this is a positive thing for the oral flora and maintain homogenous balance in the oral cavity.