title: Cosmetic Cleansing Oil Absorption by Soft Contact Lenses in Dry and Wet Conditions.
abstract: OBJECTIVE
  Previous reports showed that cosmetic cleansing oil for removing makeup, which contains mineral oil and surfactant, can deform some silicone hydrogel contact lenses (SHCLs) when applied directly to the lenses, although plasma-coated SHCLs (lotrafilcon A and B) were not affected. In the present study, we investigated hydrogel lenses and SHCLs in both wet and dry conditions.
  
  
  METHODS
  Several brands of hydrogel and SHCLs were immersed in a cleansing oil solution containing Sudan Black B for 5 min under wet and dry conditions. The lenses under the wet condition were simply picked up from the saline, whereas those under the dry condition were blotted with paper wipes. After immersing, the excess solution remaining on the lenses was removed by finger rubbing with a multipurpose solution. The lenses were then examined using a stereomicroscope, and their mean brightness was measured and compared.
  
  
  RESULTS
  The cosmetic cleansing oil was not absorbed by the hydrogel lenses under wet or dry conditions. However, four of seven brands of SHCLs absorbed the cosmetic cleansing oil under both conditions (dry and wet), whereas asmofilcon A absorbed it only under the dry condition. Lotrafilcon B and delefilcon A did not absorb cleansing oil even under the dry condition.
  
  
  CONCLUSIONS
  Hydrogel lenses resist cosmetic cleansing oil. However, SHCLs have different degrees of resistance depending on the lens material. Some SHCLs absorbed cosmetic cleansing oil more under dry conditions than under wet conditions.
authors.affiliation: Department of Ophthalmology (J.T., Y.M., A.K., M.F., Y.S.), Kindai University Faculty of Medicine, Osaka, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Tsukiyama
authors.forename: Yuko
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: Aya
authors.initials: A
authors.lastname: Kodama
authors.forename: Masahiko
authors.initials: M
authors.lastname: Fukuda
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Shimomura
mesh_terms: D003263:Contact Lenses, Hydrophilic; D003358:Cosmetics; D003902:Detergents / Q000378:metabolism*; D008899:Mineral Oil / Q000378:metabolism*; D013501:Surface-Active Agents
chemical_list: D003358:Cosmetics; D003902:Detergents; D013501:Surface-Active Agents; D008899:Mineral Oil