It is unfortunate to hear that you have tram track markings from microneedling. The solution depends on the appearance, depth, and age of the scars. Scars continue to mature and improve over a year. You can continue treating your scar with various methods early on. Topical options include silicone-based strips or gels. Microneedling, fractionated laser, and radiofrequency make microscopic holes in the scars to stimulate collagen production and encourage your scars to improve over the year. Most importantly,- keep them out of the sun. Overtime, your scar should continue to improve on its own. For young,old, or deeper scars that have plateaued in their improvement, fractionated laser, and radiofrequency make microscopic holes in the scar to stimulate your body to remodel and fill in the scar with new collagen. Chemical peels such as the TCA you describe also improve pigmentation and texture. Not everyone is a candidate for all the treatment options however as certain skin types can get worse from certain treatments. For the safest treatment plan, it is important to visit an expert for an in-person examination. Hope this helps!Johnson C. Lee, MD Board-Certified Plastic Surgeon IG: @drjohnsonlee