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Related Concept Videos

Accessory Structures of the Skin: Sweat Glands01:20

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Sweat glands or sudoriferous glands are one of the important accessory structures of the skin. They are small, coiled tubular structures located in the dermis, the middle layer of the skin. Sweat glands are responsible for producing and secreting sweat, a watery fluid that helps regulate body temperature and excrete waste products.
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Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
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Related Experiment Video

Updated: Feb 19, 2026

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device
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Sunscreen formulations do not interfere with sweat cooling during exercise.

H Ou-Yang1, K Meyer1, T Houser2

  • 1Johnson & Johnson Consumer Inc., Skillman, NJ, 08558, USA.

International Journal of Cosmetic Science
|November 7, 2017
PubMed
Summary
This summary is machine-generated.

Sweat-resistant sunscreens do not impede natural sweating or skin cooling during exercise. Continued use of these sunscreens during recreational activities is recommended for effective sun protection.

Keywords:
breathableclaim substantiationformulation/stabilityrecreationskin barrierwater-resistant

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Area of Science:

  • Dermatology
  • Exercise Physiology
  • Thermal Regulation

Background:

  • Sweating is vital for thermal balance and skin cooling during physical activity.
  • Recreational sunscreens are often formulated to be sweat-resistant.
  • Concerns exist that sweat-resistant sunscreens might hinder natural sweating and thermal regulation.

Purpose of the Study:

  • To investigate if sweat-resistant sunscreens affect natural sweating and skin temperature.
  • To determine the impact of sunscreen on the body's thermoregulatory response during exercise.

Main Methods:

  • A randomized, split-face and split-arm clinical study was performed on 24 female subjects.
  • Subjects applied SPF 70 lotion and spray sunscreens to designated skin areas.
  • Participants engaged in indoor exercise sessions to induce sweating for data collection.

Main Results:

  • Skin temperatures and sweat evaporation rates increased significantly post-exercise.
  • No significant differences in skin temperature or sweat rates were observed between sunscreen-treated and untreated sites.
  • The tested sunscreens did not measurably alter the skin's natural cooling process via sweating.

Conclusions:

  • Sweat-resistant sunscreens do not negatively impact the skin's natural cooling mechanisms.
  • The use of tested sweat-resistant sunscreens is safe and effective during recreational activities.
  • Individuals can confidently use these products for sun protection without compromising thermoregulation.