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Carotenoids in human skin.

Sarah Zerres1, Wilhelm Stahl1

  • 1Institute of Biochemistry and Molecular Biology I, Faculty of Medicine, Heinrich-Heine-University Duesseldorf, P.O. Box 101007, D-40001 Duesseldorf, Germany.

Biochimica Et Biophysica Acta. Molecular and Cell Biology of Lipids
|December 16, 2019
PubMed
Summary

Dietary carotenoids accumulate in the skin, offering moderate photoprotection against UV radiation due to their antioxidant and UV-absorbing properties. Further research is needed to confirm additional benefits for skin health and elasticity.

Keywords:
AntioxidantsCosmeticsHealthNutrientsPhotoprotectionUV-light

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Area of Science:

  • Dermatology
  • Nutritional Science
  • Photoprotection

Background:

  • The skin acts as a barrier against environmental stressors like solar radiation.
  • Carotenoids, obtained from diet, accumulate in skin tissues, particularly the forehead and palms.
  • Carotenoids possess antioxidant and UV-absorbing properties, suggesting a role in skin protection.

Purpose of the Study:

  • To investigate the photoprotective effects of carotenoids on the skin.
  • To explore potential additional benefits of carotenoid ingestion for cutaneous tissue health.

Main Methods:

  • Systemic photoprotection was assessed through human intervention studies involving carotenoid supplementation or diets rich in carotenoids.
  • Skin and blood carotenoid levels were monitored during supplementation.
  • Limited studies investigated the impact on skin moisture, texture, and elasticity.

Main Results:

  • Carotenoid levels in blood and skin increase with supplementation.
  • Carotenoids demonstrate moderate photoprotective effects against UV radiation.
  • Evidence for additional benefits on skin moisture, texture, or elasticity remains limited.

Conclusions:

  • Carotenoid intake can enhance skin's defense against UV radiation, complementing other protective measures.
  • While photoprotection is a key benefit, further investigation is required to validate claims regarding improved skin moisture, texture, and elasticity.