# numbuzin Vitamin-Niacinamide Concentrated Pad for skin with dark spots

**Lovi Fit: Average fit for skin with dark spots.**
Normal Skin Fit: Average · Effectiveness: Average · Safety: Low Risk.

Page: https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Canada.

Brand: [numbuzin](https://lovi.care/skincare/ca/brands/numbuzin)
Category: [Serums and treatments](https://lovi.care/skincare/ca/best/serums)

This fit is calculated for the concerns frequently associated with dark spots: hyperpigmentation, sun spots, and uneven skin tone. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for skin with dark spots; other serums fit it better.

## Why this fit

- Offers moderate suitability for your normal skin as niacinamide and vitamin C provide antioxidant activity and melanogenesis regulation, though it lacks sufficient emollient ingredients for optimal results.
- The formula provides general skincare benefits like hydration and soothing through ingredients such as Panthenol and Glycerin, but these are not specialized for your main goal of pigmentation.
- The product is generally safe for your normal skin, with some risks of irritation due to the presence of alcohol and ascorbic acid.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dry-skin): High
- [Combination skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots): Average (this page)
- [Mature skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/oily-acne-prone-skin): Average

## Key ingredients

Niacinamide, Glutathione, Ascorbic Acid, Sodium Hyaluronate, Panthenol

## 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, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/))
- Topical dexpanthenol acts as a moisturizer, improves stratum corneum hydration, accelerates wound healing and epidermal regeneration, reduces erythema, and improves symptoms of skin irritation compared to vehicle or no pretreatment. ([American Journal of Clinical Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12113650/))
- A new topical panthenol-containing emollient significantly improved transepidermal water loss reduction, stratum corneum hydration, and intercellular lipid lamellae length compared with control in healthy subjects without negatively impacting bacterial viability. ([The Journal of Dermatological Treatment, 2017](https://pubmed.ncbi.nlm.nih.gov/27425824/))
- Topical 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, 2021](https://pubmed.ncbi.nlm.nih.gov/33103316/))
- Topical 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, 2008](https://pubmed.ncbi.nlm.nih.gov/17882270/))
- Topical 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, 2005](https://pubmed.ncbi.nlm.nih.gov/16029679/))
- Glutathione amino acid precursors effectively increase cellular glutathione levels, reducing oxidative stress, ATP depletion, and DNA damage in human keratinocytes, clinical subjects, and ex vivo skin compared to controls. ([Journal of the European Academy of Dermatology and Venereology, 2024](https://pubmed.ncbi.nlm.nih.gov/38189670/))
- Topical oxidized glutathione significantly decreases the skin melanin index and improves moisture content, smoothness, wrinkle formation, and elasticity compared to placebo in healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2014](https://pubmed.ncbi.nlm.nih.gov/25378941/))
- Topical glutathione improves hyperpigmentation, reduces ultraviolet-induced erythema and wrinkles, decreases transepidermal water loss, and enhances antioxidant capacity. ([The Journal of Clinical and Aesthetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/41416233/))
- Topical 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, 2003](https://pubmed.ncbi.nlm.nih.gov/12823436/))
- Ascorbic acid 2-glucoside gel significantly reduced gingival melanin pigmentation after 4 weeks compared to placebo in 73 subjects with symmetric pigmentation. ([Journal of Periodontology, 2009](https://pubmed.ncbi.nlm.nih.gov/19186973/))
- Topical 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, 2022](https://pubmed.ncbi.nlm.nih.gov/34910367/))
- Topical application of 0.1% hyaluronic acid formulations of different molecular weights led to significant improvements in skin hydration and elasticity, with low-molecular-weight formulations also significantly reducing wrinkle depth in seventy-six female subjects compared to a vehicle control. ([Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/))
- Topical application of hyaluronic acid in conjunction with free gingival graft significantly reduced donor site postoperative pain until day 7 compared to normal saline, with no significant differences in graft dimensions or patient satisfaction. ([Clinical Oral Investigations, 2022](https://pubmed.ncbi.nlm.nih.gov/34623507/))
- Treatment with a hyaluronic acid-containing mouth rinse or topical gel led to significant lesion reduction, pain relief, and normalization of lesion color in adult patients with minor recurrent aphthous stomatitis, with the gel formulation showing an earlier healing onset at 3 days. ([BMC Oral Health, 2019](https://pubmed.ncbi.nlm.nih.gov/31311529/))
- Moisturizer containing 5% panthenol, madecassoside, and copper-zinc-manganese decreased adverse reactions and downtime after ablative fractional carbon dioxide laser resurfacing with comparable efficacy to 0.02% triamcinolone acetonide cream in 20 subjects. ([Journal of Cosmetic Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30945430/))
- Topical dexpanthenol formulated in lipophilic vehicles improved stratum corneum hydration and reduced transepidermal water loss compared to vehicle control in humans. ([Arzneimittel-Forschung, 2000](https://pubmed.ncbi.nlm.nih.gov/10965426/))
- Hyaluronic acid, hyaluronic acid plus dexpanthenol, and isotonic saline nasal sprays all significantly improved dry nose symptoms over four weeks in 240 patients, with hyaluronic acid plus dexpanthenol providing superior nasal moisturisation compared to the other two. ([Auris, Nasus, Larynx, 2020](https://pubmed.ncbi.nlm.nih.gov/32067777/))

## Why other serums fit skin with dark spots better

- Daily application of a serum containing tetrahexyldecyl ascorbate and acetyl zingerone significantly decreased skin pigmentation, fine lines, wrinkles, and transepidermal water loss while increasing smoothness, firmness, and elasticity in 35 healthy individuals compared to baseline over 12 weeks. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38634176/))

## What reviewers say

Based on a very large amount of data, users primarily utilize these pads to target hyperpigmentation, acne scars, and dullness, with many reporting a noticeable "glass skin" glow and smoother texture after consistent use. While effective for brightening, reactions are mixed regarding hydration; oily and combination skin types often find them refreshing, whereas those with dry or highly sensitive skin occasionally report dryness, tingling, or breakouts.

- Liked: Effective brightening (often mentioned)
- Liked: Smoother skin texture (often mentioned)
- Liked: Refreshing and lightweight (sometimes noted)
- Liked: Unique dual-sided pad (sometimes noted)
- Disliked: Packaging leaks (sometimes noted)
- Disliked: Drying for some (rarely noted)
- Disliked: Irritation and breakouts (rarely noted)
- Disliked: Texture dislike (rarely noted)

## How to apply

- Apply this serum as part of your PM routine starting 3x/week and build up to daily use if your skin likes it.
- Place the serum after cleansing and toning, but before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and wait a minute for it to absorb.
- Apply the serum on dry skin to help fade pigmentation effectively.
- Avoid the eye area and always use SPF 30+ during the day.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does the Numbuzin Vitamin-Niacinamide Concentrated Pad work for skin with dark spots?

This product works for skin with dark spots, though other products fit it better because it lacks enough softening ingredients for best results. Treatment for this skin needs a blend of effective antioxidants and soothing ingredients that fade dark spots without irritation.
Sources: [The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/)

### Which ingredients make this treatment a good fit for skin with dark spots?

Niacinamide and Ascorbic Acid make this treatment a good fit for dark spots by helping fade discoloration and brighten your skin tone. To work best for this skin, a treatment of this type needs powerful antioxidants and soothing ingredients that target pigmentation without causing irritation.
Sources: [The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/)

### What does Niacinamide do for skin with dark spots?

Niacinamide helps fade dark spots and uneven pigmentation by slowing down the transfer of pigment in the skin. It is generally well tolerated and may improve overall skin brightness with consistent use.
Sources: [The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### What does Glutathione do for skin with dark spots?

Glutathione helps brighten skin with dark spots and evens out skin color. Topical and oral use may reduce dark patches and protect against environmental stress with a good safety profile.
Sources: [Journal of Cosmetic Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30895708/), [International Journal of Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/39444151/)

### Where does this treatment go in a skincare routine for skin with dark spots?

This treatment goes in your evening routine, starting at once a week before slowly increasing frequency if your skin tolerates it well. To work best on dark spots, this type of skin needs targeted brightening ingredients and rich softening ingredients to lock in moisture.

### Can I use this treatment with retinol, and in what order?

You can use this treatment with retinol, but apply them on alternating nights or space them out to keep your skin calm and avoid irritation from combining active ingredients.

### How often should I use this treatment?

Use this treatment once a week in the evening, and if your skin feels comfortable and you see good results, you can carefully use it more often. This product of this type needs richer softening ingredients to keep skin soft and smooth, along with targeted brighteners to fade dark spots.
Sources: [The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/), [American Journal of Clinical Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12113650/)

### Can this treatment clog pores, cause breakouts or purging for skin with dark spots?

This treatment is unlikely to clog pores or cause breakouts, as only a small number of reviewers mention breakouts. To work well on skin with dark spots, this type of product needs more specialized brightening ingredients and rich softening ingredients.

### Is this treatment fragrance-free and alcohol-free?

It has no fragrance and contains drying alcohol (alcohol).

## Alternatives for skin with dark spots

- [COSRX Galactomyces 95 Tone Balancing Essence](https://lovi.care/skincare/ca/p/cosrx/galactomyces-95-tone-balancing-essence/for/dark-spots) — High fit — CA$24.49 at Amazon
- [Guerlain Abeille Royale Double R Renew & Repair Serum](https://lovi.care/skincare/ca/p/guerlain/abeille-royale-double-r-renew-and-repair-advanced-serum/for/dark-spots) — High fit — CA$250.04 at Amazon
- [Neutrogena Rapid Tone Repair Vitamin C Serum](https://lovi.care/skincare/ca/p/neutrogena/rapid-tone-repair-20-vitamin-c-face-serum-capsules/for/dark-spots) — High fit — CA$63.07 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/ca/p/cerave/foaming-facial-cleanser/for/dark-spots) — Superior fit — CA$20.96 at Amazon
- Hydrating Toner: [Pyunkang Yul Calming Deep Moisture Toner](https://lovi.care/skincare/ca/p/pyunkang-yul/calming-deep-moisture-toner/for/dark-spots) — Superior fit — CA$23.99 at Amazon
- Moisturizer: [Allies of Skin Peptides & Antioxidants Firming Daily Treatment](https://lovi.care/skincare/ca/p/allies-of-skin/peptides-and-antioxidants-firming-daily-treatment/for/dark-spots) — High fit — CA$98.99 at Amazon

## Where to buy

- Amazon.ca: CA$25.64 (https://www.amazon.ca/dp/B0C61CJ66L?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
Prices checked 6 Nov 2026.

## Ingredients

Water, Niacinamide, Dipropylene Glycol, Glycerin, Propanediol, Butylene Glycol, Hydroxyethyl Urea, Diethoxyethyl Succinate, Hydroxyacetophenone, Caprylyl Glycol, Polyglyceryl-10 Laurate, Betaine, Panthenol, Ethylhexylglycerin, Gluconolactone, Sodium Polyacrylate, Ammonium Acryloyldimethyltaurate Vp Copolymer, Sodium Citrate, Citric Acid, Maltodextrin, 1,2-Hexanediol, Gardenia Florida Fruit Extract, Dipotassium Glycyrrhizate, Sodium Hyaluronate, Ascorbic Acid, Pantolactone, Tocopherol, Capryloyl Salicylic Acid, Tranexamic Acid, Tremella Fuciformis Extract Mushroom Extract, Caprylic Capric Triglyceride, Ascorbyl Glucoside, Ubiquinone, Hydrogenated Lecithin, Magnesium Chloride, Alcohol, Glutathione, Polysorbate 80, Calcium Gluconate, Pyridoxine Hcl, Bht, Yeast Extract, Cyanocobalamin, Disodium Edta
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its 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. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- United Kingdom: https://lovi.care/skincare/uk/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Ireland: https://lovi.care/skincare/ie/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Germany: https://lovi.care/skincare/de/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- France: https://lovi.care/skincare/fr/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Italy: https://lovi.care/skincare/it/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Netherlands: https://lovi.care/skincare/nl/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Spain: https://lovi.care/skincare/es/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Canada: https://lovi.care/skincare/ca/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots (this page)
- Australia: https://lovi.care/skincare/au/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Singapore: https://lovi.care/skincare/sg/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- Saudi Arabia: https://lovi.care/skincare/sa/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots
- United Arab Emirates: https://lovi.care/skincare/ae/p/numbuzin/vitamin-niacinamide-concentrated-pad/for/dark-spots