Paula's Choice Resist Weightless Advanced Repairing Toner for acne-prone skin

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Questions and answers

What the research says

• A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women.

  Clinical, Cosmetic and Investigational Dermatology, 2017

• 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, 2001

• Epigallocatechin-3-gallate significantly improved acne in patients compared to the control side during an 8-week clinical trial.

  The Journal of Investigative Dermatology, 2013

• Licochalcone 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, 2015

• 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

• 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

• 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

• Topical CE Ferulic plus resveratrol BE serum following ablative fractional CO2 laser treatment reduced erythema index (308.9 vs. 325.3), shortened complete scabbing detachment time (6.0 vs. 6.5 days), decreased melanin index (-7.4% vs. +0.2%), and improved skin hydration compared to normal saline in 51 Chinese patients.

  Journal of the European Academy of Dermatology and Venereology, 2024

• Topical treatment with a combination of pyridine-2, 4-dicarboxylic acid diethyl ester and resveratrol significantly increased hair density in 79 Caucasian female subjects starting from 1.5 months compared to baseline.

  International Journal of Cosmetic Science, 2020

• A nighttime topical antioxidant containing resveratrol, baicalin, and vitamin E significantly improved fine lines, wrinkles, firmness, elasticity, laxity, hyperpigmentation, radiance, roughness, and dermal thickness in subjects with mild to moderately photodamaged skin over 12 weeks.

  Journal of Drugs in Dermatology, 2014

• 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

• 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

• 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

• A multi-modal methodology combining MALDI-MSI, in vivo RCM, echography, and histology revealed age-related decreases in extracellular matrix and epidermal-dermal junction proteins and undulation depth, while a blend of palmitoyl oligopeptide and palmitoyl tetrapeptide-7 improved subepidermal low-echogenic band thickness, density, and extracellular matrix structure compared to placebo.

  Journal of Cosmetic Dermatology, 2015

• Palmitoyl tetrapeptide-7, acetyl hexapeptide-8, palmitoyl tripeptide-1, and palmitoyl tetrapeptide-10 significantly increased type III collagen levels in human dermal fibroblasts following UV exposure, with their combination demonstrating a greater effect in vitro and enhancing type I, III, and IV collagen levels in ex vivo skin tissues compared to individual components.

  International Journal of Cosmetic Science, 2026

• Combining 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, 2015

• Bioactive 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, 2025

• Topical 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, 2023

Ingredients

Water, Glycerin, Ethoxydiglycol, Niacinamide, Acetyl Glucosamine, Salix Nigra Bark Extract Willow Bark Extract, Resveratrol, Sodium Hyaluronate, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Epigallocatechin Gallate, Carnosine, Genistein, Glycyrrhiza Glabra Root Extract Licorice Root Extract, Adenosine, Xanthan Gum, Citric Acid, Polysorbate 20, Butylene Glycol, Ethylhexylglycerin, Carbomer, Tetrasodium Edta, 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.