I've been dying to try this out, so after a long internal debate I splurged and went on a mini spree at Sephora. This gloss was on sale at the time... I think the original price is $22.
The O-Gloss comes in a cute pink tube with a slant tip applicator and is self titled "Intuitive Lip Gloss". The gloss itself is clear in the tube and reacts when it comes into contact with skin. This reaction is caused by a goji berry-C complex, designed to find your perfect individual gloss shade.