An interventional study of 10% High-Concentration 35 kDa Hyaluronan (HA35) Topical Anti-Pruritic Gel in Skin Pruritus, Itch and Eczema Itch, sponsored by Nakhia Impex LLC. Completed at 1 site in China. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-09-22.
Sponsored by Nakhia Impex LLC · Not applicable, Interventional, and Supportive care
This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of topical 10% high-concentration 35 kDa hyaluronan (HA35) gel for ultra-rapid relief of moderate-to-severe skin pruritus from diverse etiologies (eczema, neurodermatitis, insect bites, urticaria, postoperative wound itch). Eligible participants will receive a single topical application of HA35 gel. The primary objective is to assess pruritus relief at 10 seconds, 45 minutes, 8 hours, 12 hours, and 24 hours post-application. Safety and local skin tolerability will be evaluated throughout the observation period. This is a minimal-risk, non-pharmacological, non-invasive intervention.
This prospective, single-center, single-arm, open-label pilot clinical study investigates the ultra-rapid antipruritic efficacy and safety of topical 10% high-concentration 35 kDa hyaluronan (HA35) gel for managing moderate-to-severe skin pruritus caused by various conditions including eczema, neurodermatitis, insect bites, urticaria, and postoperative wound pruritus.
Eligible subjects will receive a single topical application of HA35 gel evenly spread over the pruritic skin area. Pruritus intensity will be assessed using a 0-10 Numeric Rating Scale (NRS) at baseline, 10 seconds, 45 minutes, 8 hours, 12 hours, and 24 hours after application. Changes in associated erythema, swelling, and wheals will also be observed.
Local skin irritation, allergic reactions, and adverse events will be monitored continuously for safety assessment.
This is a non-invasive, non-pharmacological topical intervention with minimal risk to participants. All procedures will be conducted in accordance with the Declaration of Helsinki, and written informed consent will be obtained from all subjects prior to enrollment.
490 studies on the registry are indexed under Pruritus; 93 are open to participants now.
This study's enrollment of 30 is below the median of 60 across 422 interventional studies indexed under Pruritus.
Browse Pruritus studies →Nakhia Impex LLC is the lead sponsor of 15 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants receive a single topical application of 10% high-concentration 35 kDa HA35 gel to the pruritic skin area. Efficacy on ultra-rapid pruritus relief, duration of effect, and safety will be evaluated.
Device: 10% High-Concentration 35 kDa Hyaluronan (HA35) Topical Anti-Pruritic Gel
Topical skin gel containing 10% high-concentration 35 kDa hyaluronan fragment. Applied topically to pruritic areas to provide ultra-rapid relief of skin itching and improve associated inflammatory signs.
Also known as: HA35 Itch Relief Gel, Rapid Itch Relief HA35 Gel
Change in Skin Pruritus NRS Score (0-10)
Change in pruritus intensity measured by 0-10 NRS, 0 = no itching, 10 = worst imaginable itching.
Time frame: Baseline to 10 seconds, 45 minutes, 8 hours, 12 hours, and 24 hours after application
Onset time of clinically significant pruritus relief
Time frame: Within 10 seconds after application
Duration of pruritus relief
Time frame: Up to 24 hours
Change in Skin Erythema Severity (0-10 NRS Score)
Change in skin erythema severity at the application site, assessed using a 0-10 Numeric Rating Scale (NRS), where 0 = no erythema and 10 = maximum redness.
Time frame: Baseline to 45 minutes and 24 hours after application
Change in Local Skin Swelling Severity (0-10 NRS Score)
Change in local skin swelling severity at the application site, assessed using a 0-10 Numeric Rating Scale (NRS), where 0 = no swelling and 10 = maximum swelling.
Time frame: Baseline to 45 minutes and 24 hours after application
Change in Urticarial Wheal Severity (0-10 NRS Score)
Change in urticarial wheal severity at the application site, assessed using a 0-10 Numeric Rating Scale (NRS), where 0 = no wheals and 10 = maximum wheal size and spread.
Time frame: Baseline to 45 minutes and 24 hours after application
This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.