Much much brighter skin. A high performing Vitamin C serum to help reverse sun damage, even skin and diminish dark spots.  Why we love it: Vitamin C needs little introduction for brightening anti-oxidant skincare products. Our new Vitamin C serum is formulated with tetrahexyldecyl ascorbate aka THD Vitamin C. THD is said to be the best form of Vitamin C as it is highly stable and oil soluble. It is less likely to degrade as fast as other forms of Vitamin C and lose its potency. Being fat soluble, it is also able to penetrate better into the skin's lipid layer. Alpha Arbutin (derived from Bearberry) combines with Vitamin C to boost its skin lightening effect and minimise the appearance of dark spots.