First, I want to acknowledge how exhausting this journey must feel. You've invested a tremendous amount of time, money, and recovery into treating your acne scars, and it's understandable to wonder if you've reached the point of diminishing returns. Looking at your history, you've already undergone many of the treatments we commonly use: Punch excision Fully ablative CO₂ laser Morpheus8 Halo laser Subcision TCA CROSS Filler Erbium laser The important question now isn't "What procedure haven't I tried?" It's "Which scar types remain, and which treatment best matches those specific scars?" One reason patients plateau is that acne scarring is rarely just one type. Rolling scars, boxcar scars, ice-pick scars, tethered scars, and volume loss often coexist. Once the tethering has been adequately released, repeating subcision over and over may provide very little additional benefit—which is likely why your physician feels another subcision is unlikely to help. From your description, I agree that filler can be a very reasonable next step, especially if the remaining scars are primarily due to volume loss or broad depressions rather than tethering. Hyaluronic acid fillers or longer-lasting biostimulatory fillers can soften the appearance of rolling scars remarkably well in carefully selected patients. That said, I would not necessarily abandon treatment altogether. If I were evaluating you, I would first determine: Are there still any scars that remain tethered? Are the remaining defects mostly atrophic because of lost volume? Are the ice-pick scars still the most noticeable? Is skin texture or scar depth now the biggest issue? The answers would guide the next step. In many patients who have already had extensive treatment, the goal shifts from trying to achieve 100% correction to refining the remaining 10–20% with targeted therapies. That may include: Strategic filler for persistent volume deficits. Additional TCA CROSS only for true ice-pick scars. Fractional ablative laser for texture if the skin has recovered sufficiently. Biostimulatory treatments to gradually improve collagen production over time. One thing I would avoid is continuing to repeat the same procedure simply because it helped initially. Once improvement plateaus, repeating identical treatments often yields progressively smaller returns. I also think it's worth recognizing that you've already achieved approximately 20% improvement despite having difficult scars. While that may not feel like enough, it suggests your skin is capable of remodeling—it just may require a different strategy now than it did at the beginning. My biggest piece of advice is don't measure success by whether every scar disappears. Mature acne scars often require maintenance and refinement rather than a single "final" treatment. If filler provides the greatest improvement in the scars that bother you most, that doesn't mean you've failed—it means you've reached the stage where camouflage and structural support may offer more benefit than continued aggressive resurfacing. I wouldn't say it's time to give up. I would say it's time to become more selective, focusing only on the treatments that specifically address the scars that remain rather than continuing broad treatments with diminishing returns.