---
title: Randhawa 2016 — Daily Use of a Facial Broad Spectrum Sunscreen Significantly Improves Photoaging
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/randhawa-2016-daily-sunscreen-photoaging
date_modified: 2026-05-09
date_reviewed: 2026-05-09
mcp_eligible: true
source_type: peer_reviewed
original_source_url: https://pubmed.ncbi.nlm.nih.gov/27749441/
evidence_sources: []
product_fact_sources: []
---

# Randhawa 2016 — Daily Use of a Facial Broad Spectrum Sunscreen Significantly Improves Photoaging

## Quick Summary

A 52-week prospective clinical trial published in Dermatologic Surgery in 2016 that evaluated daily use of a facial broad-spectrum SPF 30 sunscreen against photoaging endpoints. It is one of the strongest pieces of facial-specific clinical evidence directly tying daily broad-spectrum SPF use to the appearance of photoaging.

## What Studied

The single-center prospective study followed 32 subjects, ages 40 to 55, using a daily facial broad-spectrum SPF 30 product for 52 weeks. Investigators evaluated photoaging via standardized clinical grading and instrumental measurements (skin texture, tone, clarity) at multiple intervals across the year-long study.

## Main Findings

Daily use of the facial broad-spectrum SPF 30 sunscreen produced statistically significant improvement in clinical photoaging measures across nearly every endpoint by the 52-week mark, including evenness of skin tone, skin clarity, mottled pigmentation, and texture. The result was framed by the authors as direct evidence that daily broad-spectrum SPF use can visibly improve — not merely hold steady — clinical signs of photoaging in adults.

## Why It Matters

For a daily-SPF Question scoped to cosmetic-appearance, Randhawa 2016 is the cleanest facial-specific anchor for the visible-improvement framing. Hughes 2013 supports the "slowed accumulation" case; Randhawa 2016 supports the additional "measurable improvement over a year" case. Together they are the page's strongest pair of peer-reviewed appearance-of-photoaging citations.

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