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Ultrasonographic Evaluation of Cosmetic Keratolytic Treatment of Foot Calluses and Corns

Ultrasonographic Evaluation of Cosmetic Keratolytic Treatment of Hyperkeratotic Foot Lesions: A Prospective, Non-randomized, Controlled, Comparative Study of Calluses and Corns

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07765225
Enrollment
124
Registered
2026-08-14
Start date
2020-02-01
Completion date
2026-05-01
Last updated
2026-08-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Callus, Corn (Clavus), Foot Dermatoses, Hyperkeratosis

Keywords

high-frequency ultrasonography, keratolytic, urea, salicylic acid, collagen, podiatry, foot skin lesions

Brief summary

This prospective, non-randomized, controlled study evaluated the efficacy of a topical cosmetic keratolytic preparation (serum and cream containing urea, salicylic acid, and collagen) in reducing the thickness and associated pain of hyperkeratotic foot lesions (calluses and corns). High-frequency ultrasonography (18 MHz) was used for precise, quantitative measurement of lesion thickness before and after a two-month intervention. Participants were allocated to four parallel groups (treated calluses, untreated callus controls, treated corns, and untreated corn controls).

Detailed description

A total of 124 women aged 35-65 years, each presenting with a single non-infectious hyperkeratotic foot lesion, were allocated by lesion type (callus or corn) and by intervention (treated vs untreated), forming four parallel groups of 31. Treated participants applied 2 mL of serum followed by 2 mL of cream, each massaged into the lesion for two minutes, twice daily for two months. Untreated controls received no topical intervention over the same period. Lesion thickness (cm) was measured with an Esaote MyLab60 system and an 18 MHz linear probe, and pain was self-reported on a 0-10 visual analogue scale, at baseline and after two months. Within-group changes were analysed with the Wilcoxon signed-rank test and between-group reductions with the Mann-Whitney U test.

Interventions

OTHERTopical Keratolytic Cosmetic (Serum + Cream)

Application of 2 mL serum followed by 2 mL cream containing urea, salicylic acid, and collagen, massaged into the hyperkeratotic lesion for 2 minutes, twice daily (morning and evening) for 2 months

Sponsors

Wroclaw University of Health and Sport Sciences
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
35 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Adult women aged 35-65 years. * Presence of a single non-infectious hyperkeratotic foot lesion classified as either a callus or a corn. * Written informed consent provided prior to study initiation.

Exclusion criteria

* Known allergy or hypersensitivity to salicylic acid, salicylates, or other formulation ingredients. * Active dermatological conditions, skin diseases, or epidermal fissures on the lower extremities. * Diabetes mellitus. * Active cardiovascular disorders or local inflammatory conditions.

Design outcomes

Primary

MeasureTime frameDescription
Change in Hyperkeratotic Lesion ThicknessBaseline and 2 monthsLesion thickness measured in centimetres using high-frequency ultrasonography (Esaote MyLab60 with an 18 MHz linear probe)

Secondary

MeasureTime frameDescription
Change in Lesion-Associated PainBaseline and 2 monthsParticipant self-reported pain assessed on a Visual Analogue Scale (VAS) from 0 (no pain) to 10 (worst imaginable pain).

Countries

Poland

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 15, 2026