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Condition (MeSH)

Hyperpigmentation

ClinicalTrials.gov lists 289 trials for Hyperpigmentation or a narrower condition beneath it. Cosmetique Active International has the most among industry and government lead sponsors, with 13.

MeSH D017495 Skin and Connective Tissue Diseases C17
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Phase 1 Phase 1 15 Phase 1/2 Phase 1/2 5 Phase 2 Phase 2 26 Phase 2/3 Phase 2/3 7 Phase 3 Phase 3 12 Phase 4 Phase 4 35 Not applicable Not applicable 153 Observational Observational 36 Phase 1 Phase 1 15 Phase 1/2 Phase 1/2 5 Phase 2 Phase 2 26 Phase 2/3 Phase 2/3 7 Phase 3 Phase 3 12 Phase 4 Phase 4 35 Not applicable Not applicable 153 Observational Observational 36

Trials per phase (log scale)

102 of the 289 trials are tagged with Hyperpigmentation itself; the rest are tagged with a narrower condition beneath it.

Get the Hyperpigmentation report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Hyperpigmentation trials start? (24)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational

Top of scale: 32

1995: 1 trials (Observational 1) 2002: 1 trials (Observational 1) 2005: 3 trials (Not applicable 1, Phase 2 2) 2006: 6 trials (Observational 1, Phase 4 3, Phase 2 1, Phase 1/2 1) 2007: 3 trials (Not applicable 3) 2008: 11 trials (Observational 3, Not applicable 2, Phase 4 3, Phase 2/3 1, Phase 2 2) 2009: 8 trials (Observational 1, Phase 4 4, Phase 3 1, Phase 2/3 1, Phase 2 1) 2010: 5 trials (Not applicable 2, Phase 4 1, Phase 3 1, Phase 2 1) 2011: 6 trials (Not applicable 3, Phase 4 2, Phase 3 1) 2012: 6 trials (Observational 1, Not applicable 4, Phase 4 1) 2013: 11 trials (Observational 2, Not applicable 7, Phase 4 1, Phase 3 1) 2014: 3 trials (Observational 1, Not applicable 1, Phase 3 1) 2015: 9 trials (Observational 1, Not applicable 5, Phase 4 1, Phase 1 2) 2016: 10 trials (Observational 1, Not applicable 5, Phase 3 1, Phase 2 2, Phase 1/2 1) 2017: 12 trials (Observational 5, Not applicable 4, Phase 4 1, Phase 3 1, Phase 2 1) 2018: 14 trials (Not applicable 7, Phase 4 3, Phase 3 1, Phase 2/3 2, Phase 1 1) 2019: 17 trials (Observational 3, Not applicable 9, Phase 4 2, Phase 3 1, Phase 2 1, Phase 1 1) 2020: 8 trials (Observational 2, Not applicable 2, Phase 4 1, Phase 2/3 1, Phase 1 2) 2021: 18 trials (Observational 1, Not applicable 12, Phase 4 2, Phase 2 1, Phase 1 2) 2022: 28 trials (Observational 5, Not applicable 16, Phase 4 1, Phase 2 4, Phase 1 2) 2023: 32 trials (Observational 3, Not applicable 22, Phase 4 2, Phase 3 1, Phase 2 2, Phase 1 2) 2024: 28 trials (Observational 2, Not applicable 19, Phase 4 1, Phase 3 1, Phase 2 1, Phase 1/2 2, Phase 1 2) 2025: 27 trials (Not applicable 17, Phase 4 2, Phase 3 1, Phase 2/3 1, Phase 2 5, Phase 1/2 1)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 20
2025 27
2024 28
2023 32
2022 28
2021 18
2020 8
2019 17
2018 14
2017 12

Forecast of the full-year count, planned starts included, not rows of this table: about 27 trials starting in 2026 and about 29 in 2027, the average of the 24 months through September, counted as registered and carried forward, with about 0.7 times the starts already registered for the rest of 2026 added. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 15 percent and ran about 1 percent high against the count later registered; forecasts made before the year began were off by about 26 percent and ran about 20 percent low against the count later registered. The part-way figures are from forecasts that used a multiple fitted only on earlier years. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.

Prediction, not a registry value: median of 17 months from start to primary completion across 21 trials still running at the 2026-10-09 snapshot; registered median of 10 months across 171 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Hyperpigmentation trials in? (8)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 15
Phase 1/2 5
Phase 2 26
Phase 2/3 7
Phase 3 12
Phase 4 35
Not applicable 153
Observational 36

How many Hyperpigmentation trials are recruiting? (9)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 17
Recruiting 21
Enrolling by invitation 4
Active, not recruiting 9
Completed 156

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Hyperpigmentation trials? (6)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
Cosmetique Active International 13
Cryonove Pharma 9
Galderma R&D 4
Jinnah Postgraduate Medical Centre 4
Revision Skincare 4

Which drugs are being tested for Hyperpigmentation? (3)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
Hydroquinone Cream 5
Ingenol Mebutate 3
Azelaic Acid 3

Interventions as named in the registry (12)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
acid tranexamic 18
1% Metformin 6
Triple Combination Cream 5
[PRP] platelet rich plasma 3
Topical 30% metformin cream 3

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Hyperpigmentation trials report? (5)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
Diabetic ketoacidosis 2 1
Appendicitis 1 1
Myocardial infarction 1 1
Pneumonia 1 1
Severe hypoglycemia 1 1

Which publications cover Hyperpigmentation? (94)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Publications
Publication Journal Year Major topic
Visible Light-Induced Pigmentation: Improved In Vivo Methodology for Measuring Efficacy of 30 Products in 9 Randomised Controlled Trials and Correlation With In Vitro Assessment. Experimental dermatology 2025 Yes
Platelet-Rich Plasma Injections in Periorbital Hyperpigmentation in Skin Phototypes III and IV: Strengthening the Assessment of Treatment Outcomes. Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] 2025 Yes
Vitamin C mesotherapy versus diode laser for the esthetic management of physiologic gingival hyperpigmentation: a randomized clinical trial. BMC oral health 2023 Yes
Superior even skin tone and anti-ageing benefit of a combination of 4-hexylresorcinol and niacinamide. International journal of cosmetic science 2022 Yes
Facial skin characteristics and concerns in Indonesia: A cross-sectional observational study. Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) 2022 Yes

Rare-disease identity (2)

Shown in this order: exact, broader, narrower, other.

Rare-disease identity
Orphanet disease ORPHA code Relation Source
Hyperpigmentation of the skin 79375 Exact Orphadata Science knowledge files, Product 1
Hyperpigmentation of the skin 79375 Exact Orphanet Rare Disease Ontology (ORDO)

Sub-conditions in MeSH (1)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence.

Browse all condition evidence pages