Paula's Choice Niacinamide 20% Treatment for oily skin
Niacinamide
Acetyl Glucosamine
Ascorbyl Glucoside
Glycyrrhiza Glabra Root Extract Licorice Root Extract
Portulaca Oleracea Extract Purslane ExtractSuperior
- SuperiorOily Skin Fit
- SuperiorEffectiveness
- ExcellentSafety
One of the best serums for oily skin.
This fit is calculated for the concerns frequently associated with oily skin: shine, enlarged pores, blackheads, and blemishes. 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 oily skin is provided by niacinamide and epigallocatechin gallate, which offer potent seboregulation and antioxidant activity to address oily shine.
- The high concentration of niacinamide also aids in barrier resilience and provides excellent pore-cleansing and skin-evening effects.
- The safety profile is excellent, with no risks of irritation due to the absence of harsh ingredients and the presence of soothing components like licorice root extract.
How to apply
- Use this serum in your PM routine. Start by applying it 3 times a week and build up to daily use if your skin tolerates it well.
- Apply the serum after cleansing and toning, but right before your moisturizer for the best results.
- Gently press 2-3 drops of the serum into your skin. Let it absorb ⏱ for a minute before applying the next product.
- Apply the serum on clean and dry skin since your skin is not sensitive and you want to target oily shine. This helps control excess oil throughout the night.
- Avoid the delicate eye area and do a patch test before using the serum for the very first time.
People Say
★4.2Overall rating based on 1.1k+ reviewsBased on a very large amount of data, users with oily, combination, and aging skin frequently report significant improvements in skin texture and a visible reduction in the appearance of enlarged pores and "orange-peel" skin. Many praise its ability to smooth and brighten the complexion. A notable minority with sensitive skin experienced irritation, redness, or burning due to the high concentration of niacinamide.
Highlights
Minimizes enlarged pores Often Mentioned
- “pores stay clear and appear smaller”
- “visibly reduce the appearance of my pores”
- “tightened and smoothed my enlarged pores”
- “helps reduce the look of pores”
- “pores are less noticeable”
Smoother skin texture Often Mentioned
- “skin looks clearer and more even”
- “smooths out rough, orange-peel texture”
- “skin is a lot clearer and smoother”
- “skin feels great after using”
- “softens skin”
Brightens skin tone Sometimes Noted
- “skin looks brighter and healthier”
- “freckles looked lighter”
- “fades brown spots”
- “complexion looked brighter”
- “helps with redness and hyperpigmentation”
Lightweight non-sticky texture Sometimes Noted
- “absorbs very well... no tacky or sticky residue”
- “formula feels light and absorbs quickly”
- “sinks in without being tacky”
- “liquid-gel texture”
- “absorbs quickly without feeling sticky”
Causes skin irritation Sometimes Noted
- “burned so bad on application”
- “made my skin feel super dry”
- “irritates skin”
- “caused redness and stinging”
- “skin barrier felt compromised”
Expensive price point Sometimes Noted
- “expensive for on-going use”
- “pricey price”
- “little pricey for sustained use”
- “quite expensive for a small bottle”
- “wish it was cheaper”
Caused breakouts Rarely Noted
- “more pimples appears”
- “cystic breakouts”
- “caused tiny bumps”
- “broke me out”
No visible results Rarely Noted
- “didn't see any difference”
- “no noticeable improvement”
- “pores... still looking a bit bigger”
- “just ok... nothing to write home about”
- “not effective”
Sources: lovi.care, paulaschoice.com, sephora.com, reddit.com, projectvanity.com, bellyrubzbeauty.com, and more
Questions and answers
What makes Paula's Choice Niacinamide 20% Treatment one of the best fits for oily skin?
This treatment is an exceptional fit for oily skin because niacinamide and green tea extract help control excess oil and shine while keeping pores clear. Its high concentration of niacinamide also strengthens the skin barrier, and soothing licorice root extract ensures it is very safe and unlikely to cause irritation.
Carcinogenesis, 2001The British Journal of Dermatology, 2002
Which ingredients make this treatment a good fit for oily skin?
Niacinamide and epigallocatechin gallate make this treatment a great fit for your oily skin because they help control excess shine and protect against daily damage. Niacinamide also helps clear out pores and smooth your skin while keeping things calm.
What does Niacinamide do for oily skin?
Niacinamide helps balance oily skin by significantly reducing excess oil production and shine. It is well tolerated and may improve skin texture without clogging pores.
Journal of Cosmetic and Laser Therapy, 2006Antioxidants, 2021
What does Acetyl Glucosamine do for oily skin?
Acetyl glucosamine helps keep oily skin feeling smooth by normalizing how the outer skin layer sheds, which reduces flakiness and boosts hydration. A product of this type for oily skin needs lightweight, non-greasy ingredients that balance moisture without clogging pores.
Journal of Cosmetic Science, 2009Journal of Cosmetic and Laser Therapy, 2019
Where does this treatment go in a skincare routine for oily skin?
This treatment goes in the evening routine after cleansing and before your moisturizer. Putting it in the PM helps keep things simple and safe around sun exposure, though some treatments can also be used in the morning or twice a day.
Can I use this treatment with retinol, and in what order?
You can use this treatment with retinol by applying the treatment first and following with your retinol product, or by alternating nights to keep your skin calm. This helps manage oily shine while lowering the likelihood of irritation.
How often should I use this treatment?
Use this treatment in your evening routine, applying it once a day or a few times a week depending on how your skin responds. It is unlikely to cause irritation due to the absence of harsh ingredients and the presence of soothing components.
Can this treatment clog pores, cause breakouts or purging for oily skin?
Paula's Choice Niacinamide 20% Treatment is a great fit for oily skin because it helps control oily shine and keeps pores clear, so it is unlikely to clog pores or cause breakouts. Reviewers mention very few breakouts, and the formula is gentle and free of harsh ingredients.
Is this treatment fragrance-free and alcohol-free?
Yes, it has no fragrance and no drying alcohol.
What the research says
Topical application of (-)-epigallocatechin-3-gallate (EGCG) to human skin before UV irradiation decreases UV-induced production of hydrogen peroxide by 68-90% and nitric oxide by 30-100%, inhibits leukocyte infiltration and lipid peroxidation by 41-84%, and restores glutathione levels and glutathione peroxidase activity compared to UV exposure alone.
Carcinogenesis, 2001Epigallocatechin-3-gallate significantly improved acne in patients compared to the control side during an 8-week clinical trial.
The Journal of Investigative Dermatology, 2013Niacinamide 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, 2002Licochalcone A activated Nrf2 signaling, elevated cytoprotective enzymes, increased the reduced-to-oxidized glutathione ratio, and decreased reactive oxygen species in human fibroblasts and neutrophils, while a LicA-rich licorice extract lowered UVA-induced oxidative processes in vivo.
Experimental Dermatology, 2015Topical 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 2% N-acetyl glucosamine reduced facial hyperpigmentation in an 8-week split-face clinical test, with an even greater effect observed when combined with 4% niacinamide.
Journal of Cosmetic Dermatology, 2007N-acetyl-glucosamine-loaded nanostructured lipid carriers successfully delivered the hydrophilic agent through the skin and reduced melanin distribution in healthy volunteers.
Advanced Pharmaceutical Bulletin, 2016Topical cosmetic products containing hyaluronic acid, N-acetyl glucosamine, and gamma-amino butyric acid improved skin hydration by 24.28% to 33.60%, elasticity by 11.98%, and skin lightening by 5.26% over 2 months in 20 female participants.
Journal of Cosmetic and Laser Therapy, 2019Topical 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, 2022Combining 755 nm alexandrite laser with topical licorice gel significantly reduces terminal hair counts compared to alexandrite laser with placebo in women with idiopathic hirsutism.
Evidence-based Complementary and Alternative Medicine, 2015Bioactive glycyrrhizic acid and oxymatrine ionic liquid self-assembled nanomicelles significantly promoted the transdermal permeation, subcutaneous retention, and anti-photoaging efficacy of palmitoyl pentapeptide-4 in cellular and animal models compared to unformulated peptide.
Advanced Science, 2025Topical application of Glycyrrhiza glabra and Sophora japonica flavonoid-rich fractions individually and in combination significantly increased the wound healing rate and reduced oxidative stress compared to wound and Nolaver-treated groups.
Molecules, 2023Topical purslane at 5% and 10% concentrations achieved alleviation of symptoms and lesion remission comparable to topical 0.1% triamcinolone acetonide in 34 subjects with oral lichen planus over 90 days.
BMC Oral Health, 2023Facial masks containing low-temperature extracted Portulaca oleracea protect sensitive skin from photothermal stimulation and improve skin barrier function during photorejuvenation.
Cutaneous and Ocular Toxicology, 2025Portulaca oleracea extract ameliorated skin barrier damage and inflammation induced by combined exposure to glycolic acid and UVB in HaCaT cells.
Cutaneous and Ocular Toxicology, 2022
Ingredients
Water, Niacinamide, Pentylene Glycol, Butylene Glycol, Glycerin, Acetyl Glucosamine, Ascorbyl Glucoside, Glycyrrhiza Glabra Root Extract Licorice Root Extract, Spiraea Ulmaria Extract, Portulaca Oleracea Extract Purslane Extract, Camellia Japonica Flower Extract, Epigallocatechin Gallate, Boerhavia Diffusa Root Extract, Camellia Sinensis Leaf Extract, Allantoin, Lecithin, Pullulan, Panthenol, Silica, Xanthan Gum, Sclerotium Gum, Propanediol, Sodium Phytate, Phenoxyethanol, Ethylhexylglycerin
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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