Peter Thomas Roth Potent-C Targeted Spot Brightener is a targeted dark-spot treatment formulated to reduce the appearance of hyperpigmentation and even skin tone. The serum-style formula features 10% THD Ascorbate (a stable, oil-soluble vitamin C derivative) combined with antioxidant-supporting ingredients such as Vitamin E and ferulic acid, plus botanical extracts to help calm and condition skin. Key benefits include antioxidant protection, visible brightening of discoloration, and improvement in overall skin clarity while providing lightweight hydration. For use, apply a small amount directly to areas of discoloration on clean, dry skin—typically once or twice daily—avoiding the immediate eye area; follow with sun protection during daytime use. The formulation is designed for targeted application and can be integrated into most treatment routines for concerns related to dark spots, post-inflammatory hyperpigmentation, and uneven tone. Those with very sensitive or reactive skin should patch-test first and discontinue if irritation occurs. Always use a broad-spectrum sunscreen when treating pigmentation concerns to maintain results and protect treated skin. Targets and reduces dark spots while brightening skin with potent THD‑ascorbate (vitamin C). 10% THD Ascorbate (stable Vitamin C) with Vitamin E & ferulic acid brightens dark spots and evens tone. Targets dark spots, hyperpigmentation and uneven skin tone. Lightweight serum-gel texture absorbs quickly with a non-greasy, smooth finish. Helps visibly reduce dark spots and even skin tone; antioxidant-rich formula soothes and protects skin. important information This product is for external use only