Tatcha Violet-C Brightening Serum for combination skin

How to apply

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

• A 3-in-1 anti-aging topical night serum-in-oil applied once daily decreased wrinkles by 11%, increased skin firmness by 8%, reduced redness by 70%, and improved overall skin quality and complexion in 103 female subjects over 28 to 84 days compared to baseline.

  Journal of Cosmetic Dermatology, 2019

• Topical formulations containing ascorbyl tetraisopalmitate, coenzyme Q10, green tea polyphenols, and resveratrol reduced the release of inflammatory cytokines and attenuated inflammatory signs compared to untreated skin and vehicle in 25 Japanese volunteers exposed to sodium dodecyl sulfate.

  European Journal of Pharmaceutics and Biopharmaceutics, 2017

• 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

• 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

• 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

• 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

• 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

• 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

• Application of a cream containing lactic acid 12% and pramoxine HCl 1% significantly improved skin dryness, hydration, and itch compared with a nontreated control in 24 women with a history of dry itchy skin.

  Cutis, 2004

• Topical 12% ammonium lactate produced a significant sparing of epidermal and dermal atrophy induced by clobetasol propionate in human volunteers, without influencing the corticosteroid's bioavailability or antiinflammatory properties.

  Journal of the American Academy of Dermatology, 1992

• A lactic acid/ceramide lotion significantly improved skin moisturization and desquamation compared to no treatment in women with dry, rough skin on the anterior shins.

  The Journal of Clinical and Aesthetic Dermatology, 2020

• Daily application of a cream containing niosomes loaded with purple glutinous rice extract in 20 human volunteers for 28 days resulted in a significant decrease in melanin index and skin roughness by -14.05% and -9.95%, and increases in skin hydration and elastic recovery by +48.73% and +35.98% compared to initial values.

  International Journal of Cosmetic Science, 2020

• The iontophoretic delivery of hyaluronic acid nanogel-loaded Saccharomyces/Rice Ferment Filtrate significantly reduced advanced glycation end products and mitigated skin stiffening in an ex vivo skin tissue glycation model.

  International Journal of Nanomedicine, 2025

• Red rice extract suppressed UVB-induced inflammation and skin aging in human skin fibroblasts by inhibiting the MAPK signaling pathway, leading to decreased NF-kappa B and AP-1 activation, reduced ECM degradation, and increased ECM synthesis compared to UVB-irradiated controls.

  Natural Product Communications, 2016

Ingredients

Water, Bis-Glyceryl Ascorbate, Saccharomyces Camellia Sinensis Cladosiphon Okamuranus Rice Leaf Ferment Filtrate, Propanediol, Butylene Glycol, Glycerin, Ascorbyl Tetraisopalmitate, Angelica Acutiloba Root Extract, Callicarpa Japonica Fruit Extract, Prunus Mume Fruit Extract, Crataegus Cuneata Fruit Extract, Pyrus Malus Fruit Extract, Grapefruit Fruit Extract, Citrus Aurantium Dulcis Juice, Lemon Juice, Citrus Aurantifolia Juice, Glycyrrhiza Glabra Root Extract Licorice Root Extract, Scutellaria Baicalensis Root Extract, Artemisia Capillaris Flower Extract, Morus Alba Root Extract, Ziziphus Jujuba Fruit Extract, Sodium Hyaluronate, Lactic Acid, Sodium Citrate, Dipotassium Glycyrrhizate, Ammonium Acryloyldimethyltaurate Carboxyethyl Acrylate Crosspolymer, Disodium Edta, Ppg-6-Decyltetradeceth-30, Ethylhexylglycerin, 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.