This serum is billed as suitable for even the most sensitive skin types because of the soothing botanicals added and the fairly low concentration of retinols in the serum, so I was hopeful that it would be the retinol I could finally use for my fine lines and mild sun damage. However, it did severely irritate my skin, even though I used it very sparingly, waited at least 20 minutes after washing to apply it, and started using it only every third night, once a day only. I wasn't using any other type of acne or anti-aging product at the time, just a mild moisturizing cleanser, and moisturizer in the mornings after washing. I was also careful to stay out of the sun while I was using the serum. Unfortunately, within two weeks I was red and blotchy, with flaky peeling skin, and so I had to stop using it. Obviously in that short amount of time i can't report on any effects on either acne or fine lines. .
Saint Louis, MO