Before using the Advance Skin Repair & Glow Kit, perform a patch test to check for any potential allergic reactions or sensitivities. Apply a small amount of each product to a discreet area of your skin and wait for 24 hours. Discontinue use if you experience any irritation or discomfort. Avoid contact with eyes. If contact occurs, rinse thoroughly with water. Consult a dermatologist or healthcare professional if you have specific skin concerns or conditions.