All cola drinks and juices come in pet bottles. To drink the liquid directly from the bottle one has to crease in his/her lips to get fit in the small mouth of the bottle. When it is done frequently the crease made on the lips take the form of wrinkles. It is further worsening if lips are mostly dry. Even drinking with a straw from the bottle is not of much help. This is the reason why hence forth always drink any liquid in a glass.