NWT- PETER THOMAS ROTH POTENT VITAMIN. C POWER SERUM 30ml/1 fl oz. Highlights Fades the look of dark spots Visibly firms your skin Balances the feel of uneven texture Potent-C™ Power Serum unleashes the strength of THD ascorbate, an ultra-stable scientific breakthrough ingredient 50x more powerful than traditional Vitamin C. Packed with a jaw-dropping concentration of 20% Vitamin C, the serum's efficacy is amplified by the addition of two ultra-powerful antioxidants (3% Vitamin E and 2% Ferulic Acid), delivering a complete and advanced anti-aging, firming and brightening treatment. This rich moisturizing serum is a must to help improve the look of fine lines, wrinkles, firmness, uneven skin tone, texture and brightness.