When considering treatments like the Cool Peel laser, especially for under-eye tightening on olive-toned skin (Fitzpatrick skin types III-IV), it's essential to proceed with caution. CO2 lasers, including the Cool Peel, can be effective for skin tightening and resurfacing but do carry a higher risk of complications such as hyperpigmentation or hypopigmentation in darker skin tones. Here are a few key points to consider: Risk of Pigmentation Issues: Fitzpatrick skin types III and IV have an increased risk of developing pigmentation changes post-laser treatment. This can include hyperpigmentation (darkening of the skin) or hypopigmentation (lightening of the skin). Provider Expertise: It's crucial that the procedure is performed by a highly experienced and qualified provider. While estheticians can be skilled, procedures involving CO2 lasers require a deep understanding of skin types and laser settings. Ideally, treatments should be conducted under the supervision of a board-certified dermatologist or plastic surgeon with experience in laser treatments for darker skin types. Alternative Treatments: There are other options for skin tightening and rejuvenation that might be safer for olive-toned skin. These include non-ablative lasers, radiofrequency treatments, or microneedling with radiofrequency. These treatments tend to have a lower risk of pigmentation issues. Patch Test: If you decide to proceed with the Cool Peel laser, insist on a patch test. This small test area can help gauge how your skin will respond to the treatment. Post-Treatment Care: Proper post-treatment care is essential to minimize risks. This includes avoiding sun exposure, using appropriate skincare products, and following all aftercare instructions provided by your treatment provider. Given your concerns and the fact that the procedure would be performed by an esthetician, it might be wise to seek a second opinion from a board-certified dermatologist or plastic surgeon who specializes in laser treatments for olive-toned skin. They can provide a more personalized assessment and recommend the safest and most effective treatment options for your skin type and concerns. Thank you for your question, and I hope this helps you make an informed decision.