Hi,
Generally, all post-inflammatory erythema with take several weeks to months to gradually clear on its own. The more intense the preceding inflammation, the longer it will usually take to clear.
If you are bothered about the post-inflammatory erythema, a concealer is probably the safest way to conceal it while your skin heals itself and the redness fades away.
Mirvaso (bromonidine) gel, used to treat the redness of Rosacea may possibly work but it is costly and may cause skin irritation in 10% of patients using it.
Hope this helps!
