According to our experiment, DermaDoctor and Puraderm coated black wool provided the highest ultraviolet absorbency rate (lowest transmittance of ultraviolet light). These two study samples both came out with an AU (Average Absorbance) of 6, the highest possible ultraviolet absorption rate as measured by a spectrophotometer. Although originally hypothesizing white wool our study along with the confirmation of research of others (American Cancer Society and Suncare Research Laboratories) black clothing is actually the most efficient at absorbing the harmful ultraviolet rays. As observed by Coolibar (the only UPF clothing company recommended by the American Cancer Society) in order of importance these are what you should look for in an article of clothing: color (darker is better), weave (tighter is better), weight (also called mass or cover factor - heavier is better), stretch (less is better) and wetness (dry is better). This project bettered our knowledge of sun safety and caused us to check clothing tags to see what certain materials are made out of. We now can encourage others to wear darker clothing (preferably with a sun protective additive) when the sun is strong. The individuals mentioned in our project benefited as well and we now can encourage our friends and family members to be “Sunsafe”.