Refinish Acid Serum from PMD features a combination of acids: malic acid, mandelic acid, kojic acid, and hyaluronic acid.

How do I use it: Use in nighttime skin-care routine once per week. Pump a pea-sized amount onto fingertips and apply to the skin. Increase frequency according to skin tolerance. Warning: Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards. Do not use the Refinish Serum with retinol products. Doing so may irritate the skin. This product is intended for weekly use, and should not be used within 48 hours before or after using the Personal Microderm Device (not included).

From PMD.

Includes:

• 1-fl oz Refinish Acid Serum