Tags

Type your tag names separated by a space and hit enter

Regional and seasonal variations in facial sebum secretions: a proposal for the definition of combination skin type.

Abstract

BACKGROUND/AIMS

Facial sebum secretions are known to change under various circumstances. Facial skin types have been categorized as oily, normal, dry, and combination types. However, these have been evaluated subjectively by individuals to date, and no objective accepted standard measurement method exists. The combination skin type is most common, but its definition is vaguer than the definitions of the other skin types.

METHODS

We measured facial sebum secretions with Sebumeter. Sebum secretions were measured at five sites of the face seasonally for a year, in the same volunteers. Using the data obtained we developed a set of rules to define the combination skin type.

RESULTS

Regional differences in sebum secretion were confirmed. Sebum secretions on forehead, nose, and chin were higher than on both cheeks. Summer was found to be the highest sebum-secreting season, and seasonal variations were found in the T- and U-zones. A mismatch of skin type in the T- and U-zones in more than two seasons appears to be close to subjective ratings of what is described as the 'combination' skin type.

CONCLUSION

We showed that the face shows definitive regional and seasonal variations in sebum secretion. To define the combination skin type, seasonal variations in sebum secretion should be considered in addition to regional variations.

Links

  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    Department of Dermatology, Seoul National University College of Medicine, Gumi-dong, Bundang-Gu, Seongnam, Kyounggi-do, Seoul, Korea. swyoun@snu.ac.kr

    , , ,

    Source

    MeSH

    Face
    Female
    Humans
    Reference Values
    Seasons
    Sebum
    Skin Physiological Phenomena
    Surveys and Questionnaires

    Pub Type(s)

    Evaluation Studies
    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    15998330

    Citation

    Youn, Sang Woong, et al. "Regional and Seasonal Variations in Facial Sebum Secretions: a Proposal for the Definition of Combination Skin Type." Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI), vol. 11, no. 3, 2005, pp. 189-95.
    Youn SW, Na JI, Choi SY, et al. Regional and seasonal variations in facial sebum secretions: a proposal for the definition of combination skin type. Skin Res Technol. 2005;11(3):189-95.
    Youn, S. W., Na, J. I., Choi, S. Y., Huh, C. H., & Park, K. C. (2005). Regional and seasonal variations in facial sebum secretions: a proposal for the definition of combination skin type. Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI), 11(3), pp. 189-95.
    Youn SW, et al. Regional and Seasonal Variations in Facial Sebum Secretions: a Proposal for the Definition of Combination Skin Type. Skin Res Technol. 2005;11(3):189-95. PubMed PMID: 15998330.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Regional and seasonal variations in facial sebum secretions: a proposal for the definition of combination skin type. AU - Youn,Sang Woong, AU - Na,Jung Im, AU - Choi,Sun Young, AU - Huh,Chang Hun, AU - Park,Kyoung Chan, PY - 2005/7/7/pubmed PY - 2005/10/21/medline PY - 2005/7/7/entrez SP - 189 EP - 95 JF - Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) JO - Skin Res Technol VL - 11 IS - 3 N2 - BACKGROUND/AIMS: Facial sebum secretions are known to change under various circumstances. Facial skin types have been categorized as oily, normal, dry, and combination types. However, these have been evaluated subjectively by individuals to date, and no objective accepted standard measurement method exists. The combination skin type is most common, but its definition is vaguer than the definitions of the other skin types. METHODS: We measured facial sebum secretions with Sebumeter. Sebum secretions were measured at five sites of the face seasonally for a year, in the same volunteers. Using the data obtained we developed a set of rules to define the combination skin type. RESULTS: Regional differences in sebum secretion were confirmed. Sebum secretions on forehead, nose, and chin were higher than on both cheeks. Summer was found to be the highest sebum-secreting season, and seasonal variations were found in the T- and U-zones. A mismatch of skin type in the T- and U-zones in more than two seasons appears to be close to subjective ratings of what is described as the 'combination' skin type. CONCLUSION: We showed that the face shows definitive regional and seasonal variations in sebum secretion. To define the combination skin type, seasonal variations in sebum secretion should be considered in addition to regional variations. SN - 0909-752X UR - https://www.unboundmedicine.com/medline/citation/15998330/Regional_and_seasonal_variations_in_facial_sebum_secretions:_a_proposal_for_the_definition_of_combination_skin_type_ L2 - https://doi.org/10.1111/j.1600-0846.2005.00119.x DB - PRIME DP - Unbound Medicine ER -