Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment for dry skin
Niacinamide
Tetrahexyldecyl Ascorbate
Tranexamic Acid
Alpha Arbutin
Kojic AcidSuperior
- HighDry Skin Fit
- HighEffectiveness
- HighSafety
One of the best serums for dry skin.
This fit is calculated for the concerns frequently associated with dry skin: flakiness, tightness, dehydration, fine lines, and wrinkles. For scores and recommendations based on your full skin profile, including your 12D face scan results and any goals or preferences you have, please use the Lovi app.
Page built Nov 8, 2026How the Fit score works
Lovi Assistant explains
- Excellent suitability for your dry skin is provided by niacinamide and alpha arbutin, which work to brighten and even your skin tone while improving barrier function and hydration. Dimethicone and shea butter further enhance emollience and reduce water loss, smoothing your skin. The formula is safe for your dry skin, containing no harsh or irritating ingredients.
How to apply
- Apply this serum PM, starting 3×/week and working up to daily use as your skin adjusts.
- Place the serum after cleansing and toner, but right before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and let it absorb for a minute.
- Apply the serum on slightly damp skin to help lock in extra moisture.
- Avoid the eye area and do a patch test before your first use.
People Say
★4.8Overall rating based on 300+ reviewsUsers consistently praise this treatment for its ability to visibly fade post-acne marks and brighten the overall complexion, often noting its lightweight and non-sticky texture. While many see rapid results with general hyperpigmentation, some users report it is less effective on stubborn conditions like melasma and note the high price point.
Highlights
Fades dark spots Mostly Mentioned
- “acne marks faded faster”
- “reduced post-acne scars”
- “dark spots are lighter”
- “cleared up pigmentation”
Brightens complexion Often Mentioned
- “skin looks radiant”
- “immediate glow”
- “more even skin tone”
- “restored brightness”
Elegant texture Sometimes Noted
- “absorbs quickly”
- “leaves satin finish”
- “not sticky or greasy”
- “layers well under makeup”
Gentle formulation Sometimes Noted
- “no stinging or redness”
- “didn't irritate sensitive skin”
- “gentle enough for daily use”
- “hydrating feel”
High price point Sometimes Noted
- “very expensive”
- “pricey for the size”
- “wish it was cheaper”
- “luxury price tag”
Ineffective on melasma Rarely Noted
- “struggles with melasma”
- “didn't touch stubborn patches”
- “melasma didn't fade”
- “no change in deep pigment”
Potential breakouts Rarely Noted
- “caused small bumps”
- “ingredients might clog pores”
- “broke me out slightly”
- “too heavy for oily skin”
Slow results Rarely Noted
- “takes weeks to work”
- “didn't see immediate change”
- “requires patience”
- “slow progress on old scars”
Sources: lovi.care, kohls.com, dermstore.com, lovelyskin.com, youtube.com, peterthomasroth.com, and more
Questions and answers
What makes Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment one of the best fits for dry skin?
This treatment is an exceptional fit for dry skin because niacinamide and alpha arbutin brighten your skin tone while boosting hydration and strengthening your moisture barrier. Dimethicone and shea butter further soften your skin and help lock in moisture, all in a gentle formula that is safe and unlikely to cause irritation.
Which ingredients make this treatment a good fit for dry skin?
Niacinamide and alpha arbutin are great for dry skin because they brighten your tone while boosting moisture and strengthening your skin barrier. Dimethicone and shea butter also help smooth your skin by locking in hydration and preventing water loss.
What does Niacinamide do for dry skin?
Niacinamide helps dry skin by strengthening the skin barrier, increasing hydration, and reducing water loss. It supports ceramide production and helps keep the surface smooth and calm. This ingredient tends to be very well tolerated and is unlikely to irritate dry skin.
Journal of Cosmetic Dermatology, 2004Journal of Cosmetic Dermatology, 2026
What does Vitamin C do for dry skin?
Vitamin C helps keep dry skin hydrated and makes it feel soft and smooth. Daily use may also improve overall skin texture and brightness over time.
Photochemistry and Photobiology, 2021Skin Research and Technology, 2008
Where does this treatment go in a skincare routine for dry skin?
This treatment goes in the evening routine after cleansing and before your moisturizer. Putting it in the evening keeps things simple and provides extra safety around sun exposure.
Can I use this treatment with retinol, and in what order?
You can use this treatment with retinol, but it is best to apply them on alternate nights or use the retinol at night and this treatment in the morning to avoid irritation. Because this formula contains potent brightening and smoothing ingredients, introducing them gradually helps your dry skin adjust safely.
How often should I use this treatment?
You can use this treatment in your evening routine, applying it after your cleanser and before your moisturizer. It has an excellent safety profile for dry skin and is unlikely to cause irritation when used regularly.
Can this treatment clog pores, cause breakouts or purging for dry skin?
This treatment is unlikely to clog pores or cause breakouts for dry skin, as its formula contains safe and gentle ingredients. Reviewers rarely report breakouts, and the product is designed to provide excellent suitability without harshness.
Is this treatment fragrance-free and alcohol-free?
Yes, it has no fragrance and no drying alcohol. Cetyl alcohol is a fatty alcohol, which soften the skin.
What the research says
Niacinamide significantly decreased hyperpigmentation and increased skin lightness compared with vehicle alone after 4 weeks of use in women by inhibiting melanosome transfer.
The British Journal of Dermatology, 2002Encapsulation of alpha arbutin in an optimized ethosomal gel significantly improved skin melanin reduction, moisture content, and elasticity in human volunteers compared to conventional formulations.
Heliyon, 2023Topical post-laser application of human adipocyte-derived mesenchymal stem cell media combined with niacinamide significantly improved wrinkle index, melanin index, patient satisfaction, and investigator esthetic improvement scores compared to vehicle cream in patients with aging skin.
Journal of Cosmetic Dermatology, 2021Topical nicotinamide prevented solar-simulated UV-induced immunosuppression in healthy volunteers, and men experienced immunosuppression at solar-simulated UV doses three times lower than those required for women.
The Journal of Investigative Dermatology, 2008Topical 5% niacinamide applied twice daily for 12 weeks reduced fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness, and improved skin elasticity compared to vehicle control in 50 female white subjects with facial photoaging.
Dermatologic Surgery, 2005Topical application of 5% vitamin C cream significantly improved global clinical scores, increased skin microrelief density, and induced elastic tissue repair in photoaged skin compared to excipient control in healthy female volunteers.
Experimental Dermatology, 2003Ascorbic acid 2-glucoside gel significantly reduced gingival melanin pigmentation after 4 weeks compared to placebo in 73 subjects with symmetric pigmentation.
Journal of Periodontology, 2009Topical application of VC-IP cream twice daily for 8 weeks reduces periorbital wrinkles in female subjects compared to a placebo cream.
Journal of Cosmetic Dermatology, 2022A non-hydroquinone topical formulation (SKNB19) improved hyperpigmentation by 28.5% in patient self-assessment and 27% in independent reviewer assessment compared with 4% hydroquinone in 18 adult subjects, while showing significantly less irritation and better tolerability.
Journal of Cosmetic Science, 2020Combining a home-based radiofrequency device and arbutin cream reduced mMASI scores by 25.6% and melanin index by 22.8% at 8 weeks compared to baseline in 38 participants.
Journal of Cosmetic Dermatology, 2025Polyvinyl pyrrolidone-K90/Eudragit RL100 dissolving microneedle patches loaded with alpha-arbutin and resveratrol enhanced intradermal delivery by approximately 2.6 times compared to cream and slightly decreased the melanin index in human participants without causing skin irritation.
Biomaterials Science, 2023A topical formulation containing kojic acid, emblica extract, and glycolic acid demonstrated efficacy parity compared with hydroquinone 4% in multiethnic participants with mild to moderate facial dyschromia.
Cutis, 2010A nanoemulsion containing 1 mg/mL kojic dipalmitate and 5% rosehip oil demonstrated high incorporation efficiency, suitable physicochemical stability, antioxidant and depigmenting efficacy close to 1 mM ascorbic acid, and no cytotoxicity at concentrations from 0.06% to 1% in vitro.
Pharmaceutics, 2023Topical application of iron chelators kojic acid and deferiprone significantly accelerated wound healing in rats compared to control groups, with deferiprone showing superior efficacy due to higher antioxidant and iron chelation abilities.
International Wound Journal, 2013
Ingredients
Water, 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 Butter Shea Butter, Tetrahexyldecyl Ascorbate, Kojic Acid, Resveratrol, Tocopheryl Acetate, Diethylhexyl Syringylidenemalonate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Scutellaria Lateriflora Extract, Hydrolyzed 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
Behind this fit score
Lovi calculates every fit score from the full ingredient list with brand-independent rules our dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update.
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Co-founder, Medical Director
Cosmetic chemist, cosmetologist, aesthetic products developer
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Co-founder, CEO and CTO
PhD in computer science, 3x US patent holder, ex-Google, ex-Yandex
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Dr. Sofía Perea Pérez, MD, MSc
Medical Board
Aesthetic medicine practitioner, MSc in Longevity and Anti-Aging Medicine
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Medical Board
Specialist dermatologist, MBBS, MD, IFAAD
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Medical Board
Cosmetic chemist, SCS, IFSCC member
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Medical Board, Medical Advisor
Dermatology MD
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Elina Nazarenko, MD
Medical Board
Dermatology and diagnostic consultant
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Victoria Derkova, MS
Medical Board
Cosmetic chemist, cosmetic development technologist
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