Title

The Effect of Skin Care Products Containing Salicylic Acid, Glycolic Acid, Hyaluronic Acid, and Rosa Damascena Extract on the Concentration of micrococcus luteus in the Culture

Author(s)

Arrington Ashford

School Name

Spring Valley High School

Grade Level

10th Grade

Presentation Topic

Microbiology

Presentation Type

Non-Mentored

Abstract

Acne, one of the most common skin conditions in the world, affects over 50 million Americans alone. Some treatments for this condition include using dermatologist recommended products, or common cosmetics containing dermatologist approved ingredients. Such ingredients have many different purposes and are aimed toward different skin types. Because several ingredients are found in medications, the purpose of this study is to determine which specific active ingredient is the most effective and has the greatest impact on the concentration of Micrococcus luteus, a bacteria found on human skin flora. It was hypothesized that the product containing salicylic acid would have the greatest effect on the concentration of M. luteus. Clean and Clear Deep Cleaning Astringent, Proactiv Revitalizing Toner, Dickinson’s Enhanced Witch Hazel, and Burt’s Bees Rosewater Toner were chosen for this experiment because of their active ingredients and known benefits. The bacteria cultured for two weeks and the concentration was manually counted in square centimeters. Then, the products were added and the concentration was determined again after one week. At an alpha value of 0.05, a one-way ANOVA test was run and it was determined that the data was statistically significant, yielding a p-value of <0.0001. A post-hoc Tukey test determined that there was a significant difference between salicylic acid, hyaluronic acid, and Rosa damascena extract and glycolic acid and the control group. In conclusion, the hypothesis was rejected as Rosa damascena extract had the smallest amount of bacteria present at the end of experimentation.

Location

Furman Hall 126

Start Date

3-28-2020 8:30 AM

Presentation Format

Oral and Written

Group Project

No

COinS
 
Mar 28th, 8:30 AM

The Effect of Skin Care Products Containing Salicylic Acid, Glycolic Acid, Hyaluronic Acid, and Rosa Damascena Extract on the Concentration of micrococcus luteus in the Culture

Furman Hall 126

Acne, one of the most common skin conditions in the world, affects over 50 million Americans alone. Some treatments for this condition include using dermatologist recommended products, or common cosmetics containing dermatologist approved ingredients. Such ingredients have many different purposes and are aimed toward different skin types. Because several ingredients are found in medications, the purpose of this study is to determine which specific active ingredient is the most effective and has the greatest impact on the concentration of Micrococcus luteus, a bacteria found on human skin flora. It was hypothesized that the product containing salicylic acid would have the greatest effect on the concentration of M. luteus. Clean and Clear Deep Cleaning Astringent, Proactiv Revitalizing Toner, Dickinson’s Enhanced Witch Hazel, and Burt’s Bees Rosewater Toner were chosen for this experiment because of their active ingredients and known benefits. The bacteria cultured for two weeks and the concentration was manually counted in square centimeters. Then, the products were added and the concentration was determined again after one week. At an alpha value of 0.05, a one-way ANOVA test was run and it was determined that the data was statistically significant, yielding a p-value of <0.0001. A post-hoc Tukey test determined that there was a significant difference between salicylic acid, hyaluronic acid, and Rosa damascena extract and glycolic acid and the control group. In conclusion, the hypothesis was rejected as Rosa damascena extract had the smallest amount of bacteria present at the end of experimentation.