Reduction of Redness on my Facial Hypertrophic Scar

I sustained a facial (chin) injury at the age of 4 when I slipped on ice & fell face first onto a flagstone, which resulted in a scar that healed in an awkward concaved manor. 10 months ago, now at the age of 28, I had the scar excised; however there is still a very noticeable red scar on my chin. Do you have any recommendations to speed up the reduction of the redness? 5-ku? Kenalog? Laser treatments? Silicone gel? Specific combinations? Which would show the best improvements?