The relation between sun protection factor and amount of suncreen applied in vivo

  title={The relation between sun protection factor and amount of suncreen applied in vivo},
  author={A. Faurschou and H. C. Wulf},
  journal={British Journal of Dermatology},
  • A. Faurschou, H. C. Wulf
  • Published 2007
  • Chemistry, Medicine
  • British Journal of Dermatology
  • Background  The declared sun protection factor (SPF) is based on the use of a sunscreen layer of 2 mg cm−2. However, only around a quarter (0·5 mg cm−2) of this amount is applied by sunbathers. Theoretical calculations have suggested that the effective SPF is related to sunscreen quantity in an exponential way but this was not confirmed in vitro and has not been studied in vivo. 
    129 Citations

    Topics from this paper

    Paper Mentions

    The meaning and implication of sun protection factor
    • 12
    The relation between the amount of sunscreen applied and the sun protection factor in Asian skin.
    • 54
    Sun protection factor: meaning and controversies.
    • 38
    • PDF
    Sunburn protection as a function of sunscreen application thickness differs between high and low SPFs
    • 21
    Application of sunscreen preparations: a need to change the regulations
    • 31


    How well are sunscreen users protected?
    • R. Stokes, B. Diffey
    • Chemistry, Medicine
    • Photodermatology, photoimmunology & photomedicine
    • 1997
    • 117
    Quantity of sunscreen used by European students
    • 127
    Sunscreens used at the beach do not protect against erythema: A new definition of SPF is proposed
    • 123
    Sunscreen isn't enough.
    • B. Diffey
    • Medicine, Chemistry
    • Journal of photochemistry and photobiology. B, Biology
    • 2001
    • 77
    Reduction of solar keratoses by regular sunscreen use.
    • 677
    Sunscreens for delay of ultraviolet induction of skin tumors.
    • 84
    The validity and practicality of sun-reactive skin types I through VI.
    • 2,590