Skin Rocks The Antioxidant Refill Size 30ml | Black Friday Sale | Replenish your supply of the ultimate, glow-boosting serum, the antioxidant, with this refill from Skin Rocks by caroline hirons. Harnessing the power of antioxidants, this illuminating serum helps to reduce hyperpigmentation, smooth skin tone and diminish the visible signs of ageing, while defending against environmentalaggressors.