Danielle Dean Introduction Acne is caused by a bacteria called Propionibacterium acnes P acnes that grows on the pores on the face Acne forms in the pilosebaceous unit which consists of the hair shaft a sebaceous gland sebum and a hair follicle ID: 930121
Download Presentation The PPT/PDF document "The effectiveness of acne medication on ..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
The effectiveness of acne medication on the growth of bacteria
Danielle Dean
IntroductionAcne is caused by a bacteria called Propionibacterium acnes (P. acnes), that grows on the pores on the face. Acne forms in the pilosebaceous unit, which consists of the hair shaft, a sebaceous gland (sebum), and a hair follicle. P. acnes use the sebum, the oil that moisturizes the face and hair, to survive. This is why people with oilier faces are more prone to acne. Many acne medications have the purpose of reducing and/or preventing the growth of P. acnes. The main ingredient in most acne medication is either salicylic acid or benzoyl peroxide. Salicylic acid unclogs pores and prevents inflammation, while benzoyl peroxide kills bacteria on the skin.
Research ObjectivesTo test the efficiency of acne medication in stopping the growth of bacteria.
MethodsI used three petri dishes, for salicylic acid, benzoyl peroxide, and a control.I prepared each dish with agar.Each dish was streaked with bacteria E.coli, and kept in an incubator.In trail 1, I applied a layer of the medication with salicylic acid to half of the dish, and a layer of benzoyl peroxide to the other half. I did not apply anything to the control. The petri dishes were left in the incubator.In trial 2, I applied a layer of salicyclic acid to one petri dish, and a layer of benzoyl peroxide to the second dish. The third petri dish was the control, so I applied nothing to it.After two weeks, I observed the petri dishes.
ConclusionsMy hypothesis was proven to be correct, and I found that both medications were able to inhibit the growth of E.Coli. However, benzoyl peroxide had more of an effect on the bacteria.
ResultsI received more clear results from trail 1.I found that salicylic acid and benzoyl peroxide preventing the growth of bacteria. The benzoyl peroxide was slightly more effective at inhibiting the bacteria. In the control, the bacteria grew throughout the dish.
ReferencesScience Buddies Staff. "Which Acne Medication Can Really Zap That Zit?" Science Buddies. Science Buddies, 19 Feb. 2015. Web. http://www.sciencebuddies.org/science-fair-projects/project_ideas/MicroBio_p019.shtml"Acne Medication and Bacteria." Science Fair Projects. Web. 19 Jan. 2016."Benzoyl Peroxide vs Salicylic Acid." The Dermatology Review. Web. 19 Jan. 2016."WHAT IS PROPIONIBACTERIUM ACNES?" The Science of Acne. Web. 19 Jan. 2016.
HypothesisAcne medications effectively prevent the growth of bacteria that causes acne.
Petri Dish
#1
(benzoyl peroxide on left and salicylic acid on right)
Petri
dish #2 (top half salicylic acid, bottom half benzoyl peroxide)
Dish #3: Control
Dishes after medication was appliedDishes after being incubated for two weeks
Trial 1
Petri Dish
#1: salicylic acid
Petri dish #2:
benzoyl peroxide
Petri dish #3: control
Dishes after medication was applied
Dishes after being incubated for two weeks
Trial 2