I am really trying to fix this indentation under my chin (hopefully permanently)

A photo would have been very helpful. Generally speaking, however, simple Subcision can be used to permanently elevate and smooth indented scars from all causes, including trauma. Since subcision requires no scalpel cutting nor placement of stitches, so no worries about the subsequent development of stretch scars and stitch tracks, which are potential consequences of scalpel surgery,. You would be wise to consult with a board certified cosmetic dermatologist scar treatment specialist. Hope this helps and best of luck.

I'm sorry to hear about the issue you're experiencing. Indentations or scars on the face can be distressing, but there are several treatment options available that can help improve their appearance. Here are some potential solutions that you can discuss with a dermatologist or a plastic surgeon:

1. **Dermal Fillers**: Injectable fillers can be used to fill in the indentation and provide a smoother contour to the chin area. Common fillers include hyaluronic acid-based products (e.g., Juvederm, Restylane). These are not permanent solutions, but they can last from several months to over a year, depending on the product used.

2. **Fat Grafting**: This involves harvesting fat from another part of your body (such as the abdomen or thighs) and injecting it into the indentation. This can provide a more permanent solution compared to dermal fillers, although some of the injected fat may be reabsorbed by the body over time.

3. **Scar Revision Surgery**: If the indentation is due to a scar, a plastic surgeon can perform a procedure to remove the old scar and create a new, less noticeable scar. This can sometimes help to even out the skin surface.

4. **Laser Therapy**: Certain types of laser treatments can help to smooth out the skin and improve the appearance of scars. Fractional CO2 lasers and other types of resurfacing lasers can be effective in some cases.

5. **Microneedling**: This procedure uses tiny needles to create controlled micro-injuries in the skin, which can stimulate collagen production and improve the appearance of scars and indentations over time.

6. **Chemical Peels**: Depending on the depth and nature of the scar, chemical peels might help to improve skin texture and reduce the appearance of minor scars.

7. **Subcision**: This is a minor surgical procedure where a needle is inserted under the skin to break up the fibrous tissue that is causing the indentation. This can help to release the skin and allow it to return to a more natural contour.

### Recommendations:

1. **Consult a Specialist**: Schedule a consultation with a board-certified dermatologist or plastic surgeon. They can evaluate the specific characteristics of the indentation and recommend the most appropriate treatment options.

2. **Discuss Expectations**: Be clear about your expectations and understand the potential outcomes and risks associated with each treatment option.

3. **Consider Multiple Opinions**: It can be beneficial to get opinions from more than one specialist to ensure you are making an informed decision.

4. **Post-Treatment Care**: Follow all post-treatment care instructions provided by your healthcare provider to maximize the results and minimize any potential complications.

Remember that each individual's skin and healing process are unique, so what works for one person may not be suitable for another. A specialist will be able to tailor the treatment plan to your specific needs.