How Useful is the Advice: Fill up a Handful of Sunscreen and Spread it All Over Your Body

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03627260

Enrollment

Registered

2018-08-13

Start date

2017-05-01

Completion date

2017-07-29

Last updated

2018-08-13

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

Conditions

Quantity of Sunscreen, Sun Protection Factor, Sun Safety Campaigns, Sunscreen Use

Brief summary

The advice: Fill up a handful of sunscreen and spread it all over your body is used in several sun safety campaigns. The hope is that users in swimwear following the advice will apply a sunscreen quantity of 2 mg/cm\^2 to all accessible skin. The present study is the first to investigate how this advice works in practice.

Interventions

BEHAVIORALFill up a handful of sunscreen and spread it all over your body. Sunscreen, Actinica

Volunteers were asked to follow the rule of thumb: Fill up a handful of sunscreen and spread it all over your body.

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

PREVENTION

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

\- European descent

Exclusion criteria

* Skin disease * allergy to the content in sunscreen * Pregnancy * Breastfeeding

Design outcomes

Primary

Measure	Time frame
The overall quantities of sunscreen applied were calculated from the weighed amount of sunscreen used divided by the skin area accessible for sunscreen application.	Outcome measure will be assessed within half an hour after sunscreen application. There will be no further follow up.

Countries

Denmark

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026