How To Use Place one pipette length of The Good C Vitamin C Serum into the palm of your hand and distribute over the face using gentle tapping motions. Avoid the eye area. Wait for approximately one minute until the serum is absorbed before applying Dr. Barbara Sturm's Face Cream. For daytime use we recommend concluding your skincare routine with Sun Drops SPF 50 for extra sun protection. Also suitable for use in the evening as a night-time serum. The Good C Vitamin C Serum can be mixed with other Sturm serums drops or moisturisers. Product Details This is a Beyond Beauty product which means it has been sourced tried and tested and finally declared one of the most new and innovative heroes out there. The Good C Vitamin C Serum is Dr. Barbara Sturm's newest serum invention containing a unique mixture of vitamin C in three skin-friendly forms at a concentration that's easily absorbed safe and gentle on the skin. The serum contains an active ingredient complex that includes oil-soluble vitamin C THD stabilized synthetic vitamin C in glucosidic form and an extract from kakadu plum a fruit that is a potent source of plant-based vitamin C. Together they help to reduce the signs of uneven pigmentation and improve tone while also providing anti-oxidative protection against environmental stressors for a bright and even complexion. The serum also contains zinc which increases the absorption of vitamin C into the skin. Additionally vitamin C supports the formation of collagen which is needed for firm and youthful-looking skin. The Good C Vitamin C Serum contains a concentration of 5% vitamin C that is safe and gentle on the skin. Higher concentrations do not remain stable on the skin triggering inflammation and damaging the skin barrier function.