1 Cleanse your skin as usual – morning and/or evening* 2 When applying to the face: Take 2-3 drops of Vitamin C Brightening Serum on fingertips of one hand, rub fingertips of both hands together and then apply to the affected area or entire face. 3 Apply your favourite moisturisers and make-up as usual Note: if using multiple serums, layer them thinnest to thickest for best absorption *if you're also using a retinol serum use the Brightening in the morning and the retinol in the evening.