Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment — 15% Brightening Gel-Cream with THD Vitamin C

This lightweight gel-cream from Peter Thomas Roth blends niacinamide, tranexamic acid, kojic acid, alpha arbutin and a pentapeptide with an ultra-stable form of vitamin C (THD Ascorbate). Designed to target uneven skin tone caused by sun exposure, aging and acne, the formula aims to brighten skin and promote a clearer, more radiant appearance without heavy texture. The product layers into both morning and evening routines and absorbs quickly for a non-greasy finish.

How does this treatment address discoloration and dark spots?

The formula works through a multi-targeted brightening complex that helps reduce the visible appearance of hyperpigmentation and post-acne marks. THD Ascorbate delivers a stable vitamin C antioxidant effect, while niacinamide and other actives support tone-evening pathways. Regular use can lead to a more uniform complexion and improved radiance over time.

• 15% Brightening Complex: niacinamide, tranexamic acid, kojic acid, alpha arbutin, pentapeptide
• THD Ascorbate: advanced, ultra-stable vitamin C for antioxidant support
• Targets multiple causes of uneven tone: sun damage, aging, acne marks
• Gel-cream texture absorbs quickly and layers under moisturizers or SPF

What is the texture and how do I use it in my routine?

Potent-C Niacinamide Discoloration Treatment has a lightweight gel-cream feel that sinks into skin without leaving a heavy residue. Apply a thin, even layer to clean, dry skin after cleansing and before heavier creams or oils; use in the morning with sunscreen and again at night for best results.

• Apply after cleansing/toning, before moisturizer
• Suitable for morning/evening use; pair with SPF during daytime
• Absorbs quickly, making it easy to layer with other skincare
• Use consistently for visible tone improvement over weeks

Are there key ingredients I should know about and what do they do?

The formula combines several brightening actives to address pigment production and skin clarity from different angles. Niacinamide helps support skin tone balance; tranexamic and kojic acids work to inhibit pigmentation pathways; alpha arbutin targets melanin production; the pentapeptide aids skin appearance. THD Ascorbate supplies a stable vitamin C benefit to help maintain brightness.

• Niacinamide: supports even skin tone and barrier function
• Tranexamic & kojic acids: help reduce visible pigmentation
• Alpha arbutin: targets melanin formation for spot reduction
• Pentapeptide and THD Ascorbate: promote radiance and antioxidant support

How quickly can I expect to see results and are there any precautions?

Visible improvements in discoloration and spot appearance typically require consistent application over several weeks; individual results vary based on skin type and condition. Because the product contains active brightening acids and vitamin C, patch testing is recommended and pairing with daily sunscreen is important to protect results and reduce further sun-related discoloration.

• Expect gradual improvement over weeks with regular use
• Patch test first if you have sensitive skin
• Use daily SPF during daytime to protect treated skin
• Avoid combining with conflicting actives without guidance

Who is this for: This treatment is suited for anyone looking to reduce the visible appearance of dark spots, post-acne marks and uneven skin tone—particularly those who prefer a lightweight, fast-absorbing gel-cream. It works well for combination to oily skin types and for users wanting a multi-ingredient brightening approach to incorporate into a daytime and evening skincare routine, provided they also protect skin with sunscreen.

Ingredients

Water/Aqua/Eau, Niacinamide, Dimethyl Isosorbide, Isononyl Isononanoate, Tranexamic Acid, Dimethicone, Caprylic/Capric Triglyceride, Alpha Arbutin, Cetyl Alcohol, Glyceryl Stearate, Pentylene Glycol, Propanediol, C9-12 Alkane, Citric Acid, Glyceryl Stearate Se, Butyrospermum Parkii (Shea) Butter, Tetrahexyldecyl Ascorbate, Kojic Acid, Resveratrol, Tocopheryl Acetate, Diethylhexyl Syringylidenemalonate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Scutellaria Lateriflora Extract, Hydrolyzed Vegetable Protein, Silica, Sodium Stearoyl Glutamate, Coco-Caprylate/Caprate, Dimethiconol, Glycerin, Sodium Phytate, Potassium Sorbate, Sodium Benzoate, Caprylyl Glycol, Hexylene Glycol, Polysorbate 20, Ceteth-20, Steareth-20, Polyacrylate Crosspolymer-6, PEG-75 Stearate, Titanium Dioxide/CI 77891, Phenoxyethanol.