This lightweight liquid formula instantly transforms your serum or moisturiser into an anti-ageing powerhouse, packed with Vitamin C, Vitamin E, Ferulic Acid, Ergothioneine and Peptides.It smoothes fine lines, evens skin tone and rejuvenates skin, delivering a noticeable glow in just 15 minutes. Key Features Brand Paula's Choice Product Type Serum Booster Skin Type All Skin Types Key Ingredients Vitamin C, Vitamin E, Ferulic Acid, Ergothioneine, Peptides Benefits Anti-ageing, Brightening, Smooths Fine Lines, Evens Skin Tone Form Liquid Cruelty Free Yes Fragrance Free Yes Colorant Free Yes Frequently asked questions .pu-faq[open]>summary .pu-faq-c{transform:rotate(180deg)} How do I use the C15 Vitamin C Super Booster?Add a few drops to your serum or moisturiser and apply to clean skin. Can I use this booster with other active ingredients?Yes, it is formulated to be gentle and can be layered with other skincare products. How quickly will I see results?Many users notice a brighter, more even complexion within 15 minutes of application. Is this product suitable for sensitive skin?Yes, it is fragrance-free and colorant-free, making it suitable for all skin types including sensitive skin.