What percentage of glycolic acid should I use in my skincare regimen to achieve optimal results without compromising my skin’s integrity? Is there a specific range that is universally recommended, or does it vary depending on individual skin types and concerns? For instance, would a lower concentration be sufficient for sensitive skin, while those with more resilient skin might benefit from a higher percentage? Furthermore, how do different formulations, such as cleansers, toners, or serums, influence the effectiveness of glycolic acid? Should I consider factors such as my skin’s tolerance and the presence of other active ingredients in my routine? As I seek to harness the benefits of glycolic acid, how can I ensure that my choice aligns with my skin goals, whether that be enhanced exfoliation, improved texture, or reduced signs of aging? Are there guidelines or expert insights that can assist in determining the most appropriate concentration for my specific needs?