Kiehl's Cucumber Herbal Alcohol-Free Toner for acne-prone skin

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Questions and answers

What the research says

• Transgenic cucumber expressing poly-γ-glutamic acid synthesis genes increased water content by 6-14%, reduced water loss by 11-12%, decreased facial wrinkles and roughness by 19.58% and 24.97%, decreased skin melanin by 5.27%, and improved facial elasticity in human skin and zebrafish compared to controls.

  International Journal of Biological Macromolecules, 2024

• A topical gel containing chitosan, chlorhexidine, allantoin, and dexpanthenol significantly reduced postoperative pain, trismus, swelling, and analgesic consumption, while improving wound healing after third molar surgery compared to a placebo.

  Medicina Oral, Patologia Oral Y Cirugia Bucal, 2020

• A cream combining propolis, tea tree oil, and Aloe vera reduced erythema scars, acne severity index, and total lesion count better than erythromycin cream in sixty patients with mild to moderate acne vulgaris compared to placebo.

  Clinical Pharmacology, 2018

• Copper Oxide nanoparticles synthesized using cucumber extract exhibited antibacterial, antifungal, UV protection, and reactive-oxygen species inhibition properties with low cellular toxicity and skin-rejuvenating effects when incorporated into skin cream.

  Endocrine, Metabolic & Immune Disorders Drug Targets, 2021

• Topical treatment with Holothuria parva extract gel showed significant wound contraction compared to the negative control in full-thickness wounded rats.

  The International Journal of Lower Extremity Wounds, 2024

• Topical aloe vera gel significantly accelerated split-thickness skin graft donor-site healing compared to placebo in 12 patients, but showed no significant difference in pain relief.

  Plastic and Reconstructive Surgery, 2018

• Topical application of Aloe vera cream reduced postoperative pain at rest and during defecation, accelerated wound healing at two weeks, and decreased analgesic requirements in patients after open hemorrhoidectomy compared to placebo.

  Journal of Alternative and Complementary Medicine, 2010

• Formulations containing 0.10%, 0.25%, and 0.50% freeze-dried Aloe vera extract increased stratum corneum water content compared with the vehicle in 20 female subjects, while transepidermal water loss was not modified.

  Skin Research and Technology, 2006

• Apigenin protects against UVA-induced cytotoxicity and senescence in normal human dermal fibroblasts, decreases MMP-1 expression, and when applied topically as a cream in human subjects, increases dermal density and elasticity while reducing fine wrinkle length, skin evenness, moisture content, and transepidermal water loss compared to control cream.

  International Journal of Molecular Medicine, 2016

• Topical chamomile oil combined with a night splint significantly improved the symptomatic and functional status of patients with severe carpal tunnel syndrome compared to placebo, while electrodiagnostic parameters showed no significant changes.

  Complementary Therapies in Clinical Practice, 2015

• German chamomile solution applied twice a day healed peristomal skin lesions significantly faster than once-a-day 1% hydrocortisone ointment in colostomy patients, with a mean healing time of 8.89 days versus 14.53 days.

  Ostomy/wound Management, 2011

• Topical gel containing chitosan, 0.2% chlorhexidine, allantoin and dexpanthenol did not improve postoperative comfort regarding swelling and pain, but improved the wound's aesthetic appearance following impacted lower third molar extraction compared to no gel.

  Medicina Oral, Patologia Oral Y Cirugia Bucal, 2016

• An overnight patch containing Allium cepa extract and allantoin safely promotes scar healing after dermatologic surgery, resulting in significantly greater reductions in observer- and patient-assessed POSAS scores compared to no treatment.

  Aesthetic Plastic Surgery, 2018

• Prophylactic application of a topical scar gel containing Allium cepae extract, allantoin, and heparin significantly improves patient-assessed scar color, stiffness, and irregularity compared to no treatment in women following a cesarean section.

  Journal of Drugs in Dermatology, 2014

• Topical treatment with Urtica dioica hydroethanolic extract accelerated wound closure (92.39% vs 60.91%) and improved epidermal regeneration and hydroxyproline content in rats with full-thickness wounds compared to control animals over 11 days.

  BioMed Research International, 2017

Ingredients

Water, Pentylene Glycol, Phenoxyethanol, Propylene Glycol, Sodium Pca, Methylparaben, Allantoin, Cucumis Sativus Cucumber Fruit Extract, Aloe Barbadensis Aloe Barbadensis Leaf Juice, Camphor, Chamomilla Recutita Flower Extract Extract, Urtica Dioica Nettle Extract, Equisetum Arvense Extract, Betula Alba Extract, Ci 19140 Yellow 5, Ci 14700 Red 4, Ci 42090 Blue 1

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.