# Photoprotection Efficacy With Sunscreen Formulas Containing the Cyclic Merocyanine Long-UVA Absorber MCE Under UV Day Light Exposure

> **NCT04866797** · NA · UNKNOWN · sponsor: **L'Oreal** · enrollment: 50 (estimated)

## Conditions studied

- Pigmentation
- Redness

## Interventions

- **OTHER:** cyclic merocyanine
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT04866797
- **Lead sponsor:** L'Oreal
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-04-29
- **Primary completion:** 2021-06-29
- **Final completion:** 2021-06-29
- **Target enrollment:** 50 (ESTIMATED)
- **Last updated:** 2021-04-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04866797

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04866797, "Photoprotection Efficacy With Sunscreen Formulas Containing the Cyclic Merocyanine Long-UVA Absorber MCE Under UV Day Light Exposure". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04866797. Licensed CC0.

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