Post-procedural erythema (redness) is one of the most commonly observed transient side effects of scar filler treatments. Due to the high number of needle entry points, diffuse facial erythema may occur following the procedure. The severity of this erythema varies depending on factors such as skin thickness, skin type, and individual skin sensitivity.

From a functional perspective, the redness does not limit daily activities. Patients can continue their normal routines and may be exposed to sunlight with the use of appropriate sunscreen, as there is no medical contraindication to sun exposure. However, it may cause temporary cosmetic concern.

Based on clinical observations, the pronounced (severe) appearance of erythema typically subsides within the first 5–7 days after the procedure and may persist in a milder form thereafter. In rare cases, more prominent redness may last up to 12–13 days. After the second week, any remaining mild erythema can be effectively camouflaged with cosmetic products such as concealers.

In conclusion, although the duration of post-procedural erythema may vary between individuals, it is entirely temporary and does not result in any permanent adverse effects.