Why are Lanolin-based creams and ointments preferred over petroleum-based products for moisturizing and protective properties?
This question was submitted by a general dentist: Why are Lanolin-based creams and ointments preferred over petroleum-based products for moisturizing and protective properties?
Dr. Carol Janik and Caroline Fulop provided this initial response.
The key difference between lanolin and petroleum-based products lie in their properties. Lanolin is classified as an emollient whereas Petrolatum is classified as an occlusive. Emollients are oils and lipids that spread easily on the skin and provide partial occlusion resulting in hydration (Rawlings et al., 2004). It has been shown that emollient lipids resemble those naturally found on the skin and have been shown to improve the rate of barrier repair (Mao-Qiang et al., 1995). Occlusives form a layer on the surface of the skin and moisturize by retarding the evaporation of water (Rawlings et al., 2004). This difference in properties, combined with patient preference should be taken into consideration when recommending lip care treatments.
References
Rawlings, A. V., Canestrari, D. A. and Dobkowski, B. (2004), Moisturizer technology versus clinical performance. Dermatologic Therapy, 17: 49–56.
Mao-Qiang M, Brown BE, Wu-Pong S, Feinglod KR, Elias PM. Exogenous non-physiologic vs physiologic lipids. Divergent mechanisms for correction of permeability barrier dysfunction. Arch Dermatol 1995: 131: 809–816.
Dr. Carol Janik is Chief of Dentistry at the Children’s Hospital of Eastern Ontario (Ottawa, ON)
Caroline Fulop is a a fourth-year dental student at the University of Pennsylvania School of Dental Medicine (Philadelphia, PA)
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Don’t Petroleum-based products also cause more breakdown of the skin after repeated applications?
Hi Reza: Petroleum – based products have been shown to degrade latex, so these products should be avoided if wearing latex gloves. Use a water-based skin care product.
(OSHA – See 56 Federal Register 64119, December 6, 1991.)
http://www.cdc.gov/oralhealth/infectioncontrol/faq/hand.htm#a5
They do, they break down the dead flakes that need to get off of your lips and then after that is done your lips will be fine.