Lab-direct from Switzerland, this is ‘next-gen’, high-dose, stable vitamin C, sandwiched with ‘super’ actives Ferulic Acid and Tranexamic Acid, for powerhouse brightening action on dull, uneven, scarred, or UV-damaged skin. Use 5-6 drops post toner or lotion on a clean face, under moisturizer or sunscreen. It’s an excellent vitamin C for sensitive skin. This formula may discolour over time due to high levels of Vitamin C and Ferulic Acid, but the efficacy of the product will not be affected This serum has a very high concentration of active ingredients, which results in a strong scent on application, which dissipates immediately.