1. Jessica Frace Samantha Trimmer CHEM 106

2.   Popularity rising since the discovery of the health hazards of the sun  Incidence of skin cancer  Media Popularity

3. Simple 3-carbon sugar Non-toxic Browning effects discovered by accident ALSO the ingredient that makes beer golden brown

4.   Acetobacter Suboxydans: usually produces the DHA in self tanners  Milliard Reaction: amino acids interact with sugars to create brown or golden brown compounds (similar to toasting bread or grilling meat browning effects)  Proteins in skin react with amino acids to produce pigments- Melanoidins  Strantum Corneum: outer most dead layer of human skin. Shed skin daily- wearing DHA chemistry http://www.youtube.com/watch?v=qP22 ODuCip4

5.  Organic Compounds & Amino Acids  Glycine  Lysine  Histidine Erythulose: natural-based keto sugar that reacts with amino acids. Reaction occurs on the outer layer or the skin creating a non-toxic browning effect Other Ingredients

6.   Lotion: most common, daily moisturizer  Mousse  Spray: quick drying, streak-free  Airbrush Types of Self-Tanners

7.  What’s your tone? Produced with lower PH levels and a lower concentration of DHA

8.   “natural tan appearance  No tan lines  Sunless help avoid premature wrinkling and aging of your skin  Help avoid painful and disfiguring sunburn  Safer than tanning beds  More convenient; less time  Less expensive (type) Pros & Cons Allergic reaction Most do not contain any skin protecting sunscreen Rash Sensitive skin- supposed o test on small portion of skin first Some self tanner give off odors that may be inhaled and cause health issues If spots of skin are missed, tan will appear uneven

9.   www.livestrong.come/article/18671-risks-sunless- tanning/  www.livestrong.com/article/27540-self-tanners/  http://www.pubs.acs.org/cen/whatstuff/stuff/html Works Cited