Directions: Lactic + Resurfacing Serum requires guidance from a skincare professional as some clients may require use nightly and others once or twice a week. It is recommended to be used at night after cleansing. Client may experience stinging, redness, dryness, and flaking. Use under direction of skin care professional. Sensitivity to AHA’s should be determined prior to using this product. WARNING – sunburn alert – this product contains one or more hydroxy acids (AHA) or retinol that may increase your skins’ sensitivity to sun and particularly the possibility of sun burns. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product for a week afterwards. Discontinue use if sign of rash or irritation persists. Avoid contact with eyes. If contact occurs rinse eyes thoroughly with water. For external use only. Not for use on children- keep out of reach of children.