PoreWise One finding · Human trial · 2019
Study title
A randomized study to evaluate the efficacy and effectiveness of two sunscreen formulations on Indian skin types IV and V with pigmentation irregularities
- Kind of evidence
- Human trial 2019 · 216 people · enrolled / 216 completed Indian adults, Fitzpatrick IV-V · PMID 30381582
- Measured outcome
- Skin effect
- Year
- 2019
- Who was studied
- 230 enrolled / 216 completed Indian adults, Fitzpatrick IV-V
- Sample size
- 216
- Measured outcome
- In 216 Indian adults with Fitzpatrick skin types IV-V and pigmentation irregularities, regular use of two commercial sunscreens over 12 weeks significantly improved the clinical density of pigmented spots, skin radiance and chromameter-measured pigmentation.
- Certainty
- Low
- Who was measured
- Indian adults with Fitzpatrick IV-V skin, solar lentigines or PIH, applying sunscreen twice daily for 12 weeks.
- Study limits
- Single centre; industry involvement.
Where it comes from
- A randomized study to evaluate the efficacy and effectiveness of two sunscreen formulations on Indian skin types IV and V with pigmentation irregularities
Published by Indian Journal of Dermatology, Venereology and Leprology (Sarkar R, et al.) · Last checked 2026-11-10
Skin concerns studied
Other findings on the same ingredient or concern
- Skin effectAn Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide for the Prevention of Post-inflammatory Hyperpigmentation in Skin of Color
In 20 people with Fitzpatrick skin types IV-V, a broad-spectrum sunscreen containing sclareolide and niacinamide significantly prevented experimentally induced post-inflammatory hyperpigmentation: in stripped, exposed zones the protected skin improved by +5.96 ITA degrees versus -9.88 in unprotected skin (net protection about 16 ITA degrees, p < 0.001).
Human trial · 2026 · 20 people · participants with Fitzpatrick skin types IV-V · People with darker skin phototypes (IV-V) prone to post-inflammatory hyperpigmentation, applying the sunscreen daily for 20 days under UV and visible-light exposure. · Small sample (20), within-subject controlled model of experimentally induced pigmentation; the abstract calls for comparative studies with and; industry involvement.