Obagi Blue Peel (trichloroacetic acid solution) The Obagi Blue Peel is a new innovation for restoring healthier and more beautiful skin. This procedure can effectively improve a wide variety of skin conditions, including fine lines and wrinkles, uneven pigmentation, shallow acne scars, sun-damaged skin and freckling. Depending on your skin type, one to four coats of solution will be applied to various areas of your skin. The solution stimulates the production of new skin from beneath, resulting in a more youthful appearance.