How to Use Step 1. Cleanse your face and gently pat your skin dry before applying The Ordinary Vitamin C Suspension 23% + HA Spheres 2% - 30ml. Use this product after cleansing and before heavier skincare products such as moisturisers. Step 2. If you are using The Ordinary Vitamin C Suspension 23% + HA Spheres 2% - 30ml for the first time, perform a patch test before applying it to your face. Apply a small amount to a discreet area and check for any signs of irritation before regular use. Step 3. Apply a small amount of the vitamin C suspension to your face using clean fingertips. Avoid the eye area and do not apply to broken or irritated skin. Step 4. Gently spread the product evenly over your skin. Allow it to absorb before applying any additional skincare products. Step 5. Follow with a moisturiser if additional hydration is needed. Apply moisturisers after The Ordinary Vitamin C Suspension 23% + HA Spheres 2% - 30ml. Step 6. Use the product once daily, preferably in your evening skincare routine. If using during the day, follow with a broad-spectrum sunscreen as the final step of your morning routine. Step 7. Avoid using this product in the same routine as other direct acids, retinoids or other strong active ingredients unless advised by a skincare professional. Step 8. Close the tube securely after each use and store it in a cool, dry place. If irritation occurs, discontinue use and seek advice from a healthcare professional if needed.