Can A Acid Help Improve Acne Scars? Expert Insights - Dermatology

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Issues with the use of A acid?


Hello, doctor.
I would like to ask about acne scars.
If there are indentations that have just formed (less than 3 months ago), will applying retinoic acid help improve them? Additionally, for older indentations that are relatively shallow, will using first-generation retinoic acid provide some improvement? Thank you, doctor.

Niming, 20~29 year old female. Ask Date: 2021/08/05

Dr. Wu Yuxin reply Dermatology


For scars that have already formed indentations, the effectiveness of topical medications tends to be less satisfactory, while laser treatment may yield better results.

Reply Date: 2021/08/05

More Info


A: When it comes to the treatment of acne scars, particularly those that are indented or "pitted," topical retinoids like A Acid (also known as isotretinoin) can indeed play a role in improving the appearance of these scars. However, the effectiveness can vary based on several factors, including the age of the scars, their depth, and individual skin response.

1. Recent Acne Scars (Less than 3 Months Old): For scars that have formed recently, such as those less than three months old, using A Acid can be beneficial. This is because A Acid promotes cell turnover and encourages the skin to regenerate more quickly. It can help in the healing process and may reduce the visibility of these scars over time. However, it is important to note that while A Acid can improve the texture and tone of the skin, it may not completely eliminate the scars, especially if they are deep.

2. Older Acne Scars (More than 3 Months Old): For older scars, particularly those that are shallow, A Acid can still provide some improvement. The retinoid works by increasing collagen production and enhancing skin cell turnover, which can help to smooth out the skin's surface. However, the results may be more subtle compared to the effects seen on newer scars. It is also important to manage expectations; while A Acid can improve the appearance of scars, it may not completely erase them.

3. Combination with Other Treatments: For more significant improvement, especially in the case of deeper scars, combining A Acid with other treatments may be beneficial. Options such as chemical peels, microneedling, or laser therapy can be considered, as they can provide more dramatic results. Always consult with a dermatologist to determine the best approach for your specific skin type and scar condition.

4. Usage Considerations: When using A Acid, it is crucial to follow the recommended guidelines to minimize side effects such as dryness, peeling, and irritation. Start with a lower concentration and gradually increase usage as tolerated. Additionally, using a good moisturizer and sunscreen is essential, as A Acid can make the skin more sensitive to sunlight.

5. Consultation with a Dermatologist: Before starting any new treatment, especially for acne scars, it is advisable to consult with a dermatologist. They can assess your skin condition, recommend the appropriate concentration of A Acid, and discuss potential combination therapies that may enhance results.

In summary, A Acid can help improve both recent and older acne scars to some extent, but the degree of improvement will vary. For optimal results, consider a comprehensive treatment plan that may include additional therapies, and always prioritize skin health by consulting with a professional.

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